The version of Firefox installed on the remote Windows host is prior to 159.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-118 advisory.

  - Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 159.
    (CVE-2026-118008)

  - Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 159,     Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6. (CVE-2026-117860)

  - Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR     153.6, Thunderbird 159, and Thunderbird 153.6. (CVE-2026-117861)

  - Privilege escalation due to incorrect boundary conditions in the Networking component. This vulnerability     was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
    (CVE-2026-117862)

  - Information disclosure due to uninitialized memory in the Audio/Video component. This vulnerability was     fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
    (CVE-2026-117863)

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 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-31601794bf advisory.

    - Updated to latest upstream (159.0)

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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-c7df132bcb advisory.

    - Updated to latest upstream (159.0)

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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-93957 advisory.

    [153.6.0-1.0.1]
    - Fix firefox-oracle-default-prefs.js for new nss [Orabug: 37079773]
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [153.6.0]
    - Add debranding patches (Mustafa Gezen)
    - Add OpenELA default preferences (Louis Abel)

    [153.6.0-1]
    - Update to 153.6.0 ESR

Tenable has extracted the preceding description block directly from the Oracle Linux 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-2026:4928-1 advisory.

    Update to Firefox Extended Support Release 153.6.0 ESR (MFSA 2026-112, MFSA 2026-120, bsc#1286385):

    - CVE-2026-100801: Privilege escalation in the DLL Services component.
    - CVE-2026-113470: Cryptographic issue in the Security Block-lists, Allow-lists, and other State component       (bsc#1286261).
    - CVE-2026-117860: Same-origin policy bypass in the DOM: Navigation component.
    - CVE-2026-117861: Sandbox escape in the DOM: Navigation component.
    - CVE-2026-117862: Privilege escalation due to incorrect boundary conditions in the Networking component.
    - CVE-2026-117863: Information disclosure due to uninitialized memory in the Audio/Video component.
    - CVE-2026-117864: Sandbox escape in the Form Manager component.
    - CVE-2026-117865: Use-after-free in the JavaScript: GC component.
    - CVE-2026-117866: Privilege escalation due to use-after-free in the Graphics: Canvas2D component.
    - CVE-2026-117867: Use-after-free in the Layout component.
    - CVE-2026-117868: Sandbox escape in the DOM: Networking component.
    - CVE-2026-117869: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117870: Use-after-free in the JavaScript Engine component.
    - CVE-2026-117871: Invalid pointer in the Graphics component.
    - CVE-2026-117872: Use-after-free in the JavaScript: Standard Library component.
    - CVE-2026-117873: Incorrect boundary conditions in the Audio/Video: Playback component.
    - CVE-2026-117874: Use-after-free in the Internationalization component.
    - CVE-2026-117875: Use-after-free in the Layout: Scrolling and Overflow component.
    - CVE-2026-117876: Use-after-free in the Layout: Text and Fonts component.
    - CVE-2026-117877: Use-after-free in the Layout: Text and Fonts component.
    - CVE-2026-117878: Other issue, use-after-free in the Storage: IndexedDB component.
    - CVE-2026-117879: Incorrect boundary conditions in the Layout: Tables component.
    - CVE-2026-117880: Use-after-free in the XML component.
    - CVE-2026-117881: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117882: Use-after-free in the Layout component.
    - CVE-2026-117883: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-117884: Use-after-free in the Networking component.
    - CVE-2026-117885: Use-after-free in the Layout: Grid component.
    - CVE-2026-117886: Incorrect boundary conditions in the Graphics: Text component.
    - CVE-2026-117887: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117888: Uninitialized memory in the Graphics: Canvas2D component.
    - CVE-2026-117889: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-117890: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-117891: Use-after-free in the JavaScript Engine: JIT component.
    - CVE-2026-117892: Privilege escalation due to use-after-free in the WebRTC: Networking component.
    - CVE-2026-117893: Incorrect boundary conditions in the Security: PSM component.
    - CVE-2026-117894: Incorrect boundary conditions in the WebRTC: Signaling component.
    - CVE-2026-117895: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117896: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117897: Incorrect boundary conditions in the Layout: Tables component.
    - CVE-2026-117898: Use-after-free in the JavaScript Engine: JIT component.
    - CVE-2026-117899: Use-after-free in the Networking: HTTP component.
    - CVE-2026-117900: Use-after-free in the DOM: Editor component.
    - CVE-2026-117901: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117902: Use-after-free in the Layout: Text and Fonts component.
    - CVE-2026-117903: Use-after-free in the Audio/Video component.
    - CVE-2026-117904: Use-after-free in the JavaScript: GC component.
    - CVE-2026-117905: Use-after-free in the Audio/Video: Playback component.
    - CVE-2026-117906: Use-after-free in the CSS Parsing and Computation component.
    - CVE-2026-117907: Use-after-free in the Networking component.
    - CVE-2026-117908: Use-after-free in the Graphics: ImageLib component.
    - CVE-2026-117909: Use-after-free in the JavaScript: GC component.
    - CVE-2026-117910: Invalid pointer in the JavaScript Engine component.
    - CVE-2026-117911: Use-after-free in the Audio/Video: Playback component.
    - CVE-2026-117912: Same-origin policy bypass in the CSS Parsing and Computation component.
    - CVE-2026-117913: Use-after-free in the SVG component.
    - CVE-2026-117914: Use-after-free in the SVG component.
    - CVE-2026-117915: Incorrect boundary conditions in the Layout: Block and Inline component.
    - CVE-2026-117916: Use-after-free in the XSLT component.
    - CVE-2026-117917: Invalid pointer in the Graphics: WebRender component.
    - CVE-2026-117918: Use-after-free in the Graphics: Canvas2D component.
    - CVE-2026-117919: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117920: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-117921: Use-after-free in the CSS Parsing and Computation component.
    - CVE-2026-117922: Use-after-free in the Networking: WebSockets component.
    - CVE-2026-117923: Use-after-free in the Audio/Video component.
    - CVE-2026-117924: Use-after-free in the XSLT component.
    - CVE-2026-117925: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117926: Incorrect boundary conditions in the SVG component.
    - CVE-2026-117927: Use-after-free in the SVG component.
    - CVE-2026-117928: Same-origin policy bypass in the CSS Parsing and Computation component.
    - CVE-2026-117929: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117930: Use-after-free in the DOM: Bindings (WebIDL) component.
    - CVE-2026-117931: Use-after-free in the DOM: Events component.
    - CVE-2026-117932: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117933: Frame poisoning in the CSS Parsing and Computation component.
    - CVE-2026-117934: Use-after-free in the Layout component.
    - CVE-2026-117935: Use-after-free in the DOM: Bindings (WebIDL) component.
    - CVE-2026-117936: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117937: Invalid pointer in the JavaScript Engine component.
    - CVE-2026-117938: Use-after-free in the Layout component.
    - CVE-2026-117939: Use-after-free in the XML component.
    - CVE-2026-117940: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117941: Use-after-free in the DOM: CSS Object Model component.
    - CVE-2026-117942: Incorrect boundary conditions in the JavaScript Engine: JIT component.
    - CVE-2026-117943: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117944: Use-after-free in the Layout component.
    - CVE-2026-117945: Incorrect boundary conditions in the XML component.
    - CVE-2026-117946: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-117947: Use-after-free in the XML component.
    - CVE-2026-117948: Use-after-free in the SVG component.
    - CVE-2026-117949: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117950: Incorrect boundary conditions in the DOM: Core & HTML component.
    - CVE-2026-117951: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117952: Uninitialized memory in the Networking component.
    - CVE-2026-117953: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117954: Use-after-free in the Layout: Positioned component.
    - CVE-2026-117955: JIT miscompilation in the JavaScript: WebAssembly component.
    - CVE-2026-117956: Invalid pointer in the Nimbus Desktop Client component.
    - CVE-2026-117957: Cryptographic issue in the WebRTC: Networking component.
    - CVE-2026-117958: Site isolation issue in the Networking: HTTP component.
    - CVE-2026-117959: Site isolation issue in the DOM: Service Workers component.
    - CVE-2026-117960: Spoofing issue in the DOM: Core & HTML component.
    - CVE-2026-117961: Incorrect boundary conditions in the Layout: Text and Fonts component.
    - CVE-2026-117962: Sandbox escape due to incorrect boundary conditions in the Storage: Quota Manager     component.
    - CVE-2026-117963: Incorrect boundary conditions in the DOM: Service Workers component.
    - CVE-2026-117964: Use-after-free in the Panning and Zooming component.
    - CVE-2026-117965: Same-origin policy bypass in the Address Bar component.
    - CVE-2026-117966: Site isolation issue in the Networking: HTTP component.
    - CVE-2026-117967: Mitigation bypass in the DOM: Security component.
    - CVE-2026-117968: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-117969: Invalid pointer in the JavaScript Engine: JIT component.
    - CVE-2026-117970: Race condition in the Disability Access APIs component.
    - CVE-2026-117971: Sandbox escape due to use-after-free in the Print Preview component.
    - CVE-2026-117972: Use-after-free in the Graphics component.
    - CVE-2026-117973: Use-after-free in the Networking: DNS component.
    - CVE-2026-117974: Use-after-free in the XML component.
    - CVE-2026-117975: Sandbox escape due to invalid pointer in the Graphics: WebRender component.
    - CVE-2026-117976: Site isolation issue in the DOM: Navigation component.
    - CVE-2026-117977: Other issue in the Console component.
    - CVE-2026-117978: Incorrect boundary conditions in the Graphics component.
    - CVE-2026-117979: Incorrect boundary conditions in the Graphics: WebRender component.
    - CVE-2026-117980: Use-after-free in the Graphics component.
    - CVE-2026-117981: Privilege escalation in the Toolkit component.
    - CVE-2026-117982: Invalid pointer in the JavaScript Engine: JIT component.
    - CVE-2026-117983: Use-after-free in the Graphics component.
    - CVE-2026-117984: Incorrect boundary conditions in the Layout: Scrolling and Overflow component.
    - CVE-2026-117985: Sandbox escape due to use-after-free in the Graphics component.
    - CVE-2026-117986: Use-after-free in the Graphics component.
    - CVE-2026-117987: Use-after-free in the Graphics component.
    - CVE-2026-117988: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-117989: Use-after-free in the Graphics component.
    - CVE-2026-117990: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender     component.
    - CVE-2026-117991: Incorrect boundary conditions in the Layout: Text and Fonts component.
    - CVE-2026-117992: Information disclosure in the CSS Parsing and Computation component.
    - CVE-2026-117993: Integer overflow in the Graphics: Text component.
    - CVE-2026-117994: Use-after-free in the JavaScript: GC component.
    - CVE-2026-117995: Privilege escalation in the DOM: UI Events & Focus Handling component.
    - CVE-2026-117996: Incorrect boundary conditions in the WebRTC component.
    - CVE-2026-117997: Sandbox escape due to use-after-free in the Widget component.
    - CVE-2026-117998: Mitigation bypass in the DOM: Push Subscriptions component.
    - CVE-2026-117999: Race condition in the IPC component.
    - CVE-2026-118000: Information disclosure in the Networking: HTTP component.
    - CVE-2026-118002: Information disclosure due to race condition in the Networking component.
    - CVE-2026-118003: Information disclosure in the Networking: DNS component.
    - CVE-2026-118004: Incorrect boundary conditions in the CSS Transitions and Animations 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.

ID	Name	Product	Family	Published	Updated	Severity
372627	Mozilla Firefox < 159.0	Nessus	Windows	10/27/2026	11/6/2026	critical
373488	Fedora 44 : firefox (2026-31601794bf)	Nessus	Fedora Local Security Checks	10/29/2026	11/6/2026	critical
374089	Fedora 43 : firefox (2026-c7df132bcb)	Nessus	Fedora Local Security Checks	10/30/2026	11/6/2026	critical
375510	Oracle Linux 9 : firefox (ELSA-2026-93957)	Nessus	Oracle Linux Local Security Checks	11/3/2026	11/6/2026	critical
374093	SUSE SLES12: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:4928-1)	Nessus	SuSE Local Security Checks	10/30/2026	11/2/2026	critical

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