The version of Firefox installed on the remote macOS or Mac OS X host is prior to 137.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-20 advisory.

  - Memory safety bugs present in Firefox 136 and Thunderbird 136. 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. (CVE-2025-3034)

  - Memory safety bugs present in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. 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. (CVE-2025-3030)

  - JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-     free. (CVE-2025-3028)

  - An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function.
    (CVE-2025-3031)

  - Leaking of file descriptors from the fork server to web content processes could allow for privilege     escalation attacks. (CVE-2025-3032)

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.

  - By first using the AI chatbot in one tab and later activating it in another tab, the document title of the     previous tab would leak into the chat prompt. This vulnerability was fixed in Firefox 137. (CVE-2025-3035)

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

The remote Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-96c31e2086 advisory.

    - Updated to latest upstream (137.0)

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 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-d48f900812 advisory.

    - Updated to latest upstream (137.0)

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 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-4e7468921a advisory.

    - Updated to latest upstream (137.0)

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 Firefox installed on the remote Windows host is prior to 137.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-20 advisory.

  - Memory safety bugs present in Firefox 136 and Thunderbird 136. 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. (CVE-2025-3034)

  - Memory safety bugs present in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. 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. (CVE-2025-3030)

  - JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-     free. (CVE-2025-3028)

  - An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function.
    (CVE-2025-3031)

  - Leaking of file descriptors from the fork server to web content processes could allow for privilege     escalation attacks. (CVE-2025-3032)

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

The remote host is affected by the vulnerability described in GLSA-202505-02 (Mozilla Firefox: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in Mozilla Firefox. Please review the CVE identifiers     referenced below for details.

Tenable has extracted the preceding description block directly from the Gentoo 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.

ID	Name	Product	Family	Published	Updated	Severity
233646	Mozilla Firefox < 137.0	Nessus	MacOS X Local Security Checks	4/1/2025	11/18/2025	high
247035	Linux Distros Unpatched Vulnerability : CVE-2025-3035	Nessus	Misc.	8/9/2025	4/16/2026	medium
233747	Fedora 41 : firefox (2025-96c31e2086)	Nessus	Fedora Local Security Checks	4/2/2025	5/5/2025	high
233808	Fedora 40 : firefox (2025-d48f900812)	Nessus	Fedora Local Security Checks	4/3/2025	1/21/2026	high
238464	Fedora 42 : firefox (2025-4e7468921a)	Nessus	Fedora Local Security Checks	6/14/2025	6/14/2025	high
233647	Mozilla Firefox < 137.0	Nessus	Windows	4/1/2025	11/18/2025	high
235705	GLSA-202505-02 : Mozilla Firefox: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	5/12/2025	5/12/2025	critical

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