Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:23918-1 advisory.

    Update to Firefox Extended Support Release 153.3.0 ESR (MFSA 2026-93, bsc#1280371):

    - CVE-2026-92005: Use-after-free in the Audio/Video: Web Codecs component.
    - CVE-2026-92006: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92007: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92008: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92009: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92010: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92011: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92012: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92013: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92015: Privilege escalation in the WebExtensions component.
    - CVE-2026-92016: Use-after-free in the Disability Access APIs component.
    - CVE-2026-92017: Privilege escalation in the DOM: Service Workers component.
    - CVE-2026-92018: Sandbox escape in the DOM: Core & HTML component.
    - CVE-2026-92019: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92020: Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender     component.
    - CVE-2026-92022: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-92023: Use-after-free in the XML component.
    - CVE-2026-92024: Use-after-free in the SVG component.
    - CVE-2026-92025: Use-after-free in the DOM: Navigation component.
    - CVE-2026-92026: Use-after-free in the Networking component.
    - CVE-2026-92027: Use-after-free in the DOM: Streams component.
    - CVE-2026-92028: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-92029: Use-after-free in the SVG component.
    - CVE-2026-92030: Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component.
    - CVE-2026-92031: Information disclosure in the Graphics: ImageLib component.
    - CVE-2026-92032: Sandbox escape due to invalid pointer in the Graphics component.
    - CVE-2026-92035: Sandbox escape due to incorrect boundary conditions in the Graphics component.
    - CVE-2026-92038: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92039: Mitigation bypass in the DOM: Notifications component.
    - CVE-2026-92041: Mitigation bypass in the DOM: Networking component.
    - CVE-2026-92042: Race condition in the DOM: Content Processes component.
    - CVE-2026-92043: Privilege escalation due to incorrect boundary conditions in the Audio/Video component.
    - CVE-2026-92044: Information disclosure in the Networking: HTTP component.
    - CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component.
    - CVE-2026-92046: Use-after-free in the Graphics component.
    - CVE-2026-92047: Privilege escalation in the Crash Reporting component.
    - CVE-2026-92048: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92049: Use-after-free in the Widget: Win32 component.
    - CVE-2026-92052: Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component.
    - CVE-2026-92053: Privilege escalation in the Graphics: CanvasWebGL component.
    - CVE-2026-92054: Privilege escalation in the Memory component.
    - CVE-2026-92055: Privilege escalation in the DevTools component.
    - CVE-2026-92056: Use-after-free in the Graphics: Text component.
    - CVE-2026-92057: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-92058: Use-after-free in the Graphics component.
    - CVE-2026-92059: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-92060: Use-after-free in the Internationalization component.
    - CVE-2026-92062: Privilege escalation in the Session Restore component.
    - CVE-2026-92064: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92065: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92067: Use-after-free in the Widget: Gtk component.
    - CVE-2026-92068: Site isolation issue in the Reader Mode component.
    - CVE-2026-92069: Spoofing issue in the DOM: Navigation component.
    - CVE-2026-92070: Information disclosure in the Networking component.
    - CVE-2026-92071: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92072: Incorrect boundary conditions in the Safe Browsing component.
    - CVE-2026-92073: Privilege escalation in the Enterprise Policies component.
    - CVE-2026-92074: Mitigation bypass in the Popup Blocker component.
    - CVE-2026-92075: Mitigation bypass in the Networking component.
    - CVE-2026-92076: Incorrect boundary conditions in the Networking component.
    - CVE-2026-92077: Denial-of-service in the SVG component.
    - CVE-2026-92078: Denial-of-service in the Security component.
    - CVE-2026-92079: Mitigation bypass in the Widget: Win32 component.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a387125860 advisory.

    Update to latest upstream version.

    ----

    Update to latest stable upstream version.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21951-1 advisory.

    Update to Firefox Extended Support Release 153.3.0 ESR (MFSA 2026-93, bsc#1280371):

    - CVE-2026-92005: Use-after-free in the Audio/Video: Web Codecs component.
    - CVE-2026-92006: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92007: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92008: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92009: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92010: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92011: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92012: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92013: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92015: Privilege escalation in the WebExtensions component.
    - CVE-2026-92016: Use-after-free in the Disability Access APIs component.
    - CVE-2026-92017: Privilege escalation in the DOM: Service Workers component.
    - CVE-2026-92018: Sandbox escape in the DOM: Core & HTML component.
    - CVE-2026-92019: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92020: Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender     component.
    - CVE-2026-92022: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-92023: Use-after-free in the XML component.
    - CVE-2026-92024: Use-after-free in the SVG component.
    - CVE-2026-92025: Use-after-free in the DOM: Navigation component.
    - CVE-2026-92026: Use-after-free in the Networking component.
    - CVE-2026-92027: Use-after-free in the DOM: Streams component.
    - CVE-2026-92028: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-92029: Use-after-free in the SVG component.
    - CVE-2026-92030: Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component.
    - CVE-2026-92031: Information disclosure in the Graphics: ImageLib component.
    - CVE-2026-92032: Sandbox escape due to invalid pointer in the Graphics component.
    - CVE-2026-92035: Sandbox escape due to incorrect boundary conditions in the Graphics component.
    - CVE-2026-92038: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92039: Mitigation bypass in the DOM: Notifications component.
    - CVE-2026-92041: Mitigation bypass in the DOM: Networking component.
    - CVE-2026-92042: Race condition in the DOM: Content Processes component.
    - CVE-2026-92043: Privilege escalation due to incorrect boundary conditions in the Audio/Video component.
    - CVE-2026-92044: Information disclosure in the Networking: HTTP component.
    - CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component.
    - CVE-2026-92046: Use-after-free in the Graphics component.
    - CVE-2026-92047: Privilege escalation in the Crash Reporting component.
    - CVE-2026-92048: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92049: Use-after-free in the Widget: Win32 component.
    - CVE-2026-92052: Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component.
    - CVE-2026-92053: Privilege escalation in the Graphics: CanvasWebGL component.
    - CVE-2026-92054: Privilege escalation in the Memory component.
    - CVE-2026-92055: Privilege escalation in the DevTools component.
    - CVE-2026-92056: Use-after-free in the Graphics: Text component.
    - CVE-2026-92057: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-92058: Use-after-free in the Graphics component.
    - CVE-2026-92059: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-92060: Use-after-free in the Internationalization component.
    - CVE-2026-92062: Privilege escalation in the Session Restore component.
    - CVE-2026-92064: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92065: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92067: Use-after-free in the Widget: Gtk component.
    - CVE-2026-92068: Site isolation issue in the Reader Mode component.
    - CVE-2026-92069: Spoofing issue in the DOM: Navigation component.
    - CVE-2026-92070: Information disclosure in the Networking component.
    - CVE-2026-92071: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92072: Incorrect boundary conditions in the Safe Browsing component.
    - CVE-2026-92073: Privilege escalation in the Enterprise Policies component.
    - CVE-2026-92074: Mitigation bypass in the Popup Blocker component.
    - CVE-2026-92075: Mitigation bypass in the Networking component.
    - CVE-2026-92076: Incorrect boundary conditions in the Networking component.
    - CVE-2026-92077: Denial-of-service in the SVG component.
    - CVE-2026-92078: Denial-of-service in the Security component.
    - CVE-2026-92079: Mitigation bypass in the Widget: Win32 component.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4264-1 advisory.

    Update to Firefox Extended Support Release 153.3.0 ESRi (MFSA 2026-93, bsc#1280371)

    - CVE-2026-92005: Use-after-free in the Audio/Video: Web Codecs component.
    - CVE-2026-92006: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92007: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92008: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92009: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92010: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92011: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92012: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92013: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92015: Privilege escalation in the WebExtensions component.
    - CVE-2026-92016: Use-after-free in the Disability Access APIs component.
    - CVE-2026-92017: Privilege escalation in the DOM: Service Workers component.
    - CVE-2026-92018: Sandbox escape in the DOM: Core & HTML component.
    - CVE-2026-92019: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92020: Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender     component.
    - CVE-2026-92022: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-92023: Use-after-free in the XML component.
    - CVE-2026-92024: Use-after-free in the SVG component.
    - CVE-2026-92025: Use-after-free in the DOM: Navigation component.
    - CVE-2026-92026: Use-after-free in the Networking component.
    - CVE-2026-92027: Use-after-free in the DOM: Streams component.
    - CVE-2026-92028: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-92029: Use-after-free in the SVG component.
    - CVE-2026-92030: Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component.
    - CVE-2026-92031: Information disclosure in the Graphics: ImageLib component.
    - CVE-2026-92032: Sandbox escape due to invalid pointer in the Graphics component.
    - CVE-2026-92035: Sandbox escape due to incorrect boundary conditions in the Graphics component.
    - CVE-2026-92038: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92039: Mitigation bypass in the DOM: Notifications component.
    - CVE-2026-92041: Mitigation bypass in the DOM: Networking component.
    - CVE-2026-92042: Race condition in the DOM: Content Processes component.
    - CVE-2026-92043: Privilege escalation due to incorrect boundary conditions in the Audio/Video component.
    - CVE-2026-92044: Information disclosure in the Networking: HTTP component.
    - CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component.
    - CVE-2026-92046: Use-after-free in the Graphics component.
    - CVE-2026-92047: Privilege escalation in the Crash Reporting component.
    - CVE-2026-92048: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92049: Use-after-free in the Widget: Win32 component.
    - CVE-2026-92052: Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component.
    - CVE-2026-92053: Privilege escalation in the Graphics: CanvasWebGL component.
    - CVE-2026-92054: Privilege escalation in the Memory component.
    - CVE-2026-92055: Privilege escalation in the DevTools component.
    - CVE-2026-92056: Use-after-free in the Graphics: Text component.
    - CVE-2026-92057: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-92058: Use-after-free in the Graphics component.
    - CVE-2026-92059: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-92060: Use-after-free in the Internationalization component.
    - CVE-2026-92062: Privilege escalation in the Session Restore component.
    - CVE-2026-92064: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92065: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92067: Use-after-free in the Widget: Gtk component.
    - CVE-2026-92068: Site isolation issue in the Reader Mode component.
    - CVE-2026-92069: Spoofing issue in the DOM: Navigation component.
    - CVE-2026-92070: Information disclosure in the Networking component.
    - CVE-2026-92071: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92072: Incorrect boundary conditions in the Safe Browsing component.
    - CVE-2026-92073: Privilege escalation in the Enterprise Policies component.
    - CVE-2026-92074: Mitigation bypass in the Popup Blocker component.
    - CVE-2026-92075: Mitigation bypass in the Networking component.
    - CVE-2026-92076: Incorrect boundary conditions in the Networking component.
    - CVE-2026-92077: Denial-of-service in the SVG component.
    - CVE-2026-92078: Denial-of-service in the Security component.
    - CVE-2026-92079: Mitigation bypass in the Widget: Win32 component.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2026-d7ba4af112 advisory.

    NSS Release Notes

    Update NSS to 3.129.0

    - Bug 2017322 - set CKA_NSS_SERVER_DISTRUST_AFTER for CN=Izenpe.com.
    - Bug 2025246 - fix unknown key error type in ssl_SetAuthKeyBits.
    - Bug 2029288 - avoid integer overflow in PK11_BlockData.
    - Bug 2056790 - Use PK11 digest contexts for explicit hashing in cryptohi.
    - Bug 2056793 - Add tests for concurrent channel info queries during session replacement.
    - Bug 2057185 - Document ./mach try and its Mercurial-only caveat in CLAUDE.md.
    - Bug 2060316 - remove support for pre-standard Kyber.
    - Bug 2065219 - Update Cryptofuzz version.
    - Bug 2065423 - Build NSPR out of tree, into the dist directory.
    - Bug 2065879 - re-vendor HACL* and simplify run_hacl.sh.
    - Bug 2066046 - Fix a race in STAN_GetNSSCertificate.
    - Bug 2066265 - Support for ML-KEM-512 in freebl and softoken.
    - Bug 2066266 - ML-KEM-1024 incorrectly allows an explicit encapsulation seed.
    - Bug 2066591 - Remove write-only blLib and libraryName statics from freebl's lowhash_vector.
    - Bug 2066900 - pin NSPR 4.40 in CI.
    - Bug 2066960 - fix UB in ecperf.c.
    - Bug 2067237 - MLKEM mechinfo needs keys sizes.
    - Bug 2067239 - Old coverity issues.
    - Bug 2067434 - avoid building libcrux twice in makefile builds.
    - Bug 2068010 - fix non-linux arm64 makefile builds.
    - Bug 2068191 - add --dry-run to mach try to print job list.
    - Bug 2068788 - emit static library names during static build.

    https://firefox-source-docs.mozilla.org/security/nss/releases/nss_3_129.html

    Firefox updated to latest upstream (156.0)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4247-1 advisory.

    Update to Firefox Extended Support Release 153.3.0 ESRi (MFSA 2026-93, bsc#1280371)

    - CVE-2026-92005: Use-after-free in the Audio/Video: Web Codecs component.
    - CVE-2026-92006: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92007: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92008: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92009: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92010: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92011: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92012: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92013: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92015: Privilege escalation in the WebExtensions component.
    - CVE-2026-92016: Use-after-free in the Disability Access APIs component.
    - CVE-2026-92017: Privilege escalation in the DOM: Service Workers component.
    - CVE-2026-92018: Sandbox escape in the DOM: Core & HTML component.
    - CVE-2026-92019: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92020: Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender     component.
    - CVE-2026-92022: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-92023: Use-after-free in the XML component.
    - CVE-2026-92024: Use-after-free in the SVG component.
    - CVE-2026-92025: Use-after-free in the DOM: Navigation component.
    - CVE-2026-92026: Use-after-free in the Networking component.
    - CVE-2026-92027: Use-after-free in the DOM: Streams component.
    - CVE-2026-92028: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-92029: Use-after-free in the SVG component.
    - CVE-2026-92030: Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component.
    - CVE-2026-92031: Information disclosure in the Graphics: ImageLib component.
    - CVE-2026-92032: Sandbox escape due to invalid pointer in the Graphics component.
    - CVE-2026-92035: Sandbox escape due to incorrect boundary conditions in the Graphics component.
    - CVE-2026-92038: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92039: Mitigation bypass in the DOM: Notifications component.
    - CVE-2026-92041: Mitigation bypass in the DOM: Networking component.
    - CVE-2026-92042: Race condition in the DOM: Content Processes component.
    - CVE-2026-92043: Privilege escalation due to incorrect boundary conditions in the Audio/Video component.
    - CVE-2026-92044: Information disclosure in the Networking: HTTP component.
    - CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component.
    - CVE-2026-92046: Use-after-free in the Graphics component.
    - CVE-2026-92047: Privilege escalation in the Crash Reporting component.
    - CVE-2026-92048: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92049: Use-after-free in the Widget: Win32 component.
    - CVE-2026-92052: Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component.
    - CVE-2026-92053: Privilege escalation in the Graphics: CanvasWebGL component.
    - CVE-2026-92054: Privilege escalation in the Memory component.
    - CVE-2026-92055: Privilege escalation in the DevTools component.
    - CVE-2026-92056: Use-after-free in the Graphics: Text component.
    - CVE-2026-92057: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-92058: Use-after-free in the Graphics component.
    - CVE-2026-92059: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-92060: Use-after-free in the Internationalization component.
    - CVE-2026-92062: Privilege escalation in the Session Restore component.
    - CVE-2026-92064: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92065: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92067: Use-after-free in the Widget: Gtk component.
    - CVE-2026-92068: Site isolation issue in the Reader Mode component.
    - CVE-2026-92069: Spoofing issue in the DOM: Navigation component.
    - CVE-2026-92070: Information disclosure in the Networking component.
    - CVE-2026-92071: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92072: Incorrect boundary conditions in the Safe Browsing component.
    - CVE-2026-92073: Privilege escalation in the Enterprise Policies component.
    - CVE-2026-92074: Mitigation bypass in the Popup Blocker component.
    - CVE-2026-92075: Mitigation bypass in the Networking component.
    - CVE-2026-92076: Incorrect boundary conditions in the Networking component.
    - CVE-2026-92077: Denial-of-service in the SVG component.
    - CVE-2026-92078: Denial-of-service in the Security component.
    - CVE-2026-92079: Mitigation bypass in the Widget: Win32 component.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was     fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3. (CVE-2026-92048)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of Thunderbird installed on the remote Windows host is prior to 153.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-96 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156,     Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3. (CVE-2026-92073)

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
    (CVE-2026-92005)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 153.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-96 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156,     Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3. (CVE-2026-92073)

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
    (CVE-2026-92005)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Thunderbird installed on the remote Windows host is prior to 156.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-94 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156,     Firefox ESR 153.3, and Thunderbird 156. (CVE-2026-92073)

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16. (CVE-2026-92005)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 156.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-94 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156,     Firefox ESR 153.3, and Thunderbird 156. (CVE-2026-92073)

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16. (CVE-2026-92005)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 153.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-93 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156 and     Firefox ESR 153.3. (CVE-2026-92073)

  - Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox 156,     Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92017)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92005)

  - Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
    (CVE-2026-92006, CVE-2026-92007, CVE-2026-92008, CVE-2026-92009, CVE-2026-92010, CVE-2026-92011,     CVE-2026-92012, CVE-2026-92013)

  - Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox     ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92015)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox ESR installed on the remote Windows host is prior to 153.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-93 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156 and     Firefox ESR 153.3. (CVE-2026-92073)

  - Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox 156,     Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92017)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92005)

  - Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
    (CVE-2026-92006, CVE-2026-92007, CVE-2026-92008, CVE-2026-92009, CVE-2026-92010, CVE-2026-92011,     CVE-2026-92012, CVE-2026-92013)

  - Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox     ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92015)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 156.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-90 advisory.

  - Privilege escalation in the Memory component. This vulnerability was fixed in Firefox 156 and Firefox ESR     153.3. (CVE-2026-92054)

  - Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox     ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92015)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92005)

  - Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
    (CVE-2026-92006, CVE-2026-92007, CVE-2026-92008, CVE-2026-92009, CVE-2026-92010, CVE-2026-92011,     CVE-2026-92012, CVE-2026-92013)

  - Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was     fixed in Firefox 156 and Firefox ESR 153.3. (CVE-2026-92035)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote Windows host is prior to 156.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-90 advisory.

  - Privilege escalation in the Memory component. This vulnerability was fixed in Firefox 156 and Firefox ESR     153.3. (CVE-2026-92054)

  - Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox     ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92015)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92005)

  - Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
    (CVE-2026-92006, CVE-2026-92007, CVE-2026-92008, CVE-2026-92009, CVE-2026-92010, CVE-2026-92011,     CVE-2026-92012, CVE-2026-92013)

  - Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was     fixed in Firefox 156 and Firefox ESR 153.3. (CVE-2026-92035)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
351407	SUSE SLES16: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:23918-1)	Nessus	SuSE Local Security Checks	Local	critical
351285	Fedora 43 : thunderbird (2026-a387125860)	Nessus	Fedora Local Security Checks	Local	critical
350767	openSUSE 16: MozillaFirefox / MozillaFirefox-branding-upstream / etc (openSUSE-SU-2026:21951-1)	Nessus	SuSE Local Security Checks	Local	critical
348276	SUSE SLED15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:4264-1)	Nessus	SuSE Local Security Checks	Local	critical
348270	Fedora 43 : firefox / nss (2026-d7ba4af112)	Nessus	Fedora Local Security Checks	Local	critical
347906	SUSE SLES12: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:4247-1)	Nessus	SuSE Local Security Checks	Local	critical
346409	Linux Distros Unpatched Vulnerability : CVE-2026-92048	Nessus	Misc.	Local	critical
346320	Mozilla Thunderbird < 153.3	Nessus	Windows	Local	critical
346319	Mozilla Thunderbird < 153.3	Nessus	MacOS X Local Security Checks	Local	critical
346179	Mozilla Thunderbird < 156.0	Nessus	Windows	Local	critical
346176	Mozilla Thunderbird < 156.0	Nessus	MacOS X Local Security Checks	Local	critical
345908	Mozilla Firefox ESR < 153.3	Nessus	MacOS X Local Security Checks	Local	critical
345905	Mozilla Firefox ESR < 153.3	Nessus	Windows	Local	critical
345903	Mozilla Firefox < 156.0	Nessus	MacOS X Local Security Checks	Local	critical
345901	Mozilla Firefox < 156.0	Nessus	Windows	Local	critical

Detections

Analytics

CVE-2026-92048

critical

Tenable Plugins

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