Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been be bypassed (distinct from CVE-2025-0245). This vulnerability was fixed in Firefox 136.

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

  - Under certain circumstances, a user opt-in setting that Focus should require authentication before use     could have been be bypassed (distinct from CVE-2025-0245). This vulnerability was fixed in Firefox 136.
    (CVE-2025-1941)

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

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.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 1a67144d-0d86-11f0-8542-b42e991fc52e advisory.

    security@mozilla.org reports:
    An inconsistent comparator in xslt/txNodeSorter could have resulted             in potentially exploitable out-of-bounds access.  Only affected             version 122 and later.  This vulnerability affects Firefox <             136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird             < 128.8.
    Under certain circumstances, a user opt-in setting that Focus should             require authentication before use could have been be bypassed             (distinct from CVE-2025-0245).  This vulnerability affects Firefox             < 136.
    When String.toUpperCase() caused a string to get longer it was             possible for uninitialized memory to be incorporated into the result             string This vulnerability affects Firefox < 136 and Thunderbird             < 136.
    Websites redirecting to a non-HTTP scheme URL could allow a website             address to be spoofed for a malicious page This vulnerability affects             Firefox for iOS < 136.

Tenable has extracted the preceding description block directly from the FreeBSD 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-2025-100adaf12d advisory.

    - Updated to latest upstream (136.0)

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 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-60c0e24d76 advisory.

    - Updated to latest upstream (136.0)

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 macOS or Mac OS X host is prior to 136.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-14 advisory.

  - Malicious pages could use Firefox for Android to pass FIDO: links to the OS and trigger the hybrid     passkey transport. An attacker within Bluetooth range could have used this to trick the user into using     their passkey to log the attacker's computer into the target account. (CVE-2024-9956)

  - On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-     after-free in the Browser process. This could have led to a sandbox escape. (CVE-2025-1930)

  - Android apps can load web pages using the Custom Tabs feature. This feature supports a transition     animation that could have been used to trick a user into granting sensitive permissions by hiding what the     user was actually clicking. (CVE-2025-1939)

  - It was possible to cause a use-after-free in the content process side of a WebTransport connection,     leading to a potentially exploitable crash. (CVE-2025-1931)

  - An inconsistent comparator in xslt/txNodeSorter could have resulted in potentially exploitable out-of-     bounds access. Only affected version 122 and later. (CVE-2025-1932)

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 136.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-14 advisory.

  - Malicious pages could use Firefox for Android to pass FIDO: links to the OS and trigger the hybrid     passkey transport. An attacker within Bluetooth range could have used this to trick the user into using     their passkey to log the attacker's computer into the target account. (CVE-2024-9956)

  - On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-     after-free in the Browser process. This could have led to a sandbox escape. (CVE-2025-1930)

  - Android apps can load web pages using the Custom Tabs feature. This feature supports a transition     animation that could have been used to trick a user into granting sensitive permissions by hiding what the     user was actually clicking. (CVE-2025-1939)

  - It was possible to cause a use-after-free in the content process side of a WebTransport connection,     leading to a potentially exploitable crash. (CVE-2025-1931)

  - An inconsistent comparator in xslt/txNodeSorter could have resulted in potentially exploitable out-of-     bounds access. Only affected version 122 and later. (CVE-2025-1932)

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
244486	Linux Distros Unpatched Vulnerability : CVE-2025-1941	Nessus	Misc.	Local	critical
235705	GLSA-202505-02 : Mozilla Firefox: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	Local	critical
233786	FreeBSD : mozilla -- multiple vulnerabilities (1a67144d-0d86-11f0-8542-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	Local	critical
232329	Fedora 40 : firefox (2025-100adaf12d)	Nessus	Fedora Local Security Checks	Local	high
232205	Fedora 41 : firefox (2025-60c0e24d76)	Nessus	Fedora Local Security Checks	Local	high
221619	Mozilla Firefox < 136.0	Nessus	MacOS X Local Security Checks	Local	high
221618	Mozilla Firefox < 136.0	Nessus	Windows	Local	high

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CVE-2025-1941

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