The version of Firefox installed on the remote Windows host is prior to 146.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-92 advisory.

  - Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146 and Firefox ESR     < 140.6. (CVE-2025-14328, CVE-2025-14329)

  - Use-after-free in the WebRTC: Signaling component. This vulnerability affects Firefox < 146 and Firefox     ESR < 140.6. (CVE-2025-14321)

  - Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6. (CVE-2025-14322)

  - Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, and Firefox ESR < 140.6. (CVE-2025-14323)

  - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, and Firefox ESR < 140.6. (CVE-2025-14324)

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 146.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-92 advisory.

  - Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146 and Firefox ESR     < 140.6. (CVE-2025-14328, CVE-2025-14329)

  - Use-after-free in the WebRTC: Signaling component. This vulnerability affects Firefox < 146 and Firefox     ESR < 140.6. (CVE-2025-14321)

  - Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6. (CVE-2025-14322)

  - Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, and Firefox ESR < 140.6. (CVE-2025-14323)

  - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, and Firefox ESR < 140.6. (CVE-2025-14324)

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 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-4984e74557 advisory.

    - Fixed aarch64 crashes

    ----

    - Updated to latest upstream (146.0)


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 version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the b6e19247-d6a8-11f0-8e1b-b42e991fc52e advisory.

    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1963153%2C1985058%2C1995637%2C1997118 reports:
    Memory safety bugs. Some of these bugs showed evidence of               memory corruption and we presume that with enough effort               some of these could have been exploited to run arbitrary               code.

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

Note that Nessus has not tested for this issue 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 146.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-95 advisory.

  - Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146, Firefox ESR <     140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14328, CVE-2025-14329)

  - Use-after-free in the WebRTC: Signaling component. This vulnerability affects Firefox < 146, Firefox ESR <     140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14321)

  - Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and     Thunderbird < 140.6. (CVE-2025-14322)

  - Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14323)

  - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14324)

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 146.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-95 advisory.

  - Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 146, Firefox ESR <     140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14328, CVE-2025-14329)

  - Use-after-free in the WebRTC: Signaling component. This vulnerability affects Firefox < 146, Firefox ESR <     140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14321)

  - Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and     Thunderbird < 140.6. (CVE-2025-14322)

  - Privilege escalation in the DOM: Notifications component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14323)

  - JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146,     Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6. (CVE-2025-14324)

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.

  - Memory safety bugs present in Firefox 145 and Thunderbird 145. Some of these bugs showed evidence of     memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. This vulnerability was fixed in Firefox 146 and Thunderbird 146. (CVE-2025-14332)

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

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-f20b9f321d advisory.

    - Fixed aarch64 crashes

    ----

    - Updated to latest upstream (146.0)


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.

ID	Name	Product	Family	Published	Updated	Severity
277971	Mozilla Firefox < 146.0	Nessus	Windows	12/9/2025	2/26/2026	critical
277973	Mozilla Firefox < 146.0	Nessus	MacOS X Local Security Checks	12/9/2025	2/26/2026	critical
278637	Fedora 42 : firefox (2025-4984e74557)	Nessus	Fedora Local Security Checks	12/14/2025	2/24/2026	critical
278381	FreeBSD : Mozilla -- Memory safety bugs (b6e19247-d6a8-11f0-8e1b-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	12/11/2025	1/21/2026	high
278135	Mozilla Thunderbird < 146.0	Nessus	Windows	12/10/2025	2/25/2026	critical
278137	Mozilla Thunderbird < 146.0	Nessus	MacOS X Local Security Checks	12/10/2025	2/25/2026	critical
278545	Linux Distros Unpatched Vulnerability : CVE-2025-14332	Nessus	Misc.	12/12/2025	4/16/2026	high
278638	Fedora 43 : firefox (2025-f20b9f321d)	Nessus	Fedora Local Security Checks	12/14/2025	2/24/2026	critical

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