A memory allocation check was missing which would lead to a use-after-free if the allocation failed. This could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability affects Firefox < 126.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-154196 advisory.

    A memory allocation check was missing which would lead to a use-after-free if the allocation failed. This     could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability     affects Firefox < 126.

Tenable has extracted the preceding description block directly from the Unity Linux 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A memory allocation check was missing which would lead to a use-after-free if the allocation failed. This     could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability     affects Firefox < 126. (CVE-2024-4771)

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-202408-02 (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 remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6779-1 advisory.

    Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service, obtain     sensitive information across domains, or execute arbitrary code. (CVE-2024-4767, CVE-2024-4768,     CVE-2024-4769, CVE-2024-4771, CVE-2024-4772, CVE-2024-4773, CVE-2024-4774, CVE-2024-4775, CVE-2024-4776,     CVE-2024-4777, CVE-2024-4778)

    Jan-Ivar Bruaroey discovered that Firefox did not properly manage memory when audio input connected with     multiple consumers. An attacker could potentially exploit this issue to cause a denial of service, or     execute arbitrary code. (CVE-2024-4764)

    Thomas Rinsma discovered that Firefox did not properly handle type check when handling fonts in PDF.js. An     attacker could potentially exploit this issue to execute arbitrary javascript code in PDF.js.
    (CVE-2024-4367)

    Irvan Kurniawan discovered that Firefox did not properly handle certain font styles when saving a page to     PDF. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2024-4770)

Tenable has extracted the preceding description block directly from the Ubuntu 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-2024-eabe68b149 advisory.

    - new upstream update (126.0)

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 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-a2c6c8afa9 advisory.

    - new upstream update (126.0)

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 126.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2024-21 advisory.

  - Memory safety bugs present in Firefox 125, Firefox ESR 115.10, and Thunderbird 115.10. 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-2024-4777)

  - Multiple WebRTC threads could have claimed a newly connected audio input leading to use-after-free.
    (CVE-2024-4764)

  - A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution     in the PDF.js context. (CVE-2024-4367)

  - Web application manifests were stored by using an insecure MD5 hash which allowed for a hash collision to     overwrite another application's manifest. This could have been exploited to run arbitrary code in another     application's context.  This issue only affects Firefox for Android. Other versions of Firefox are     unaffected. (CVE-2024-4765)

  - Different techniques existed to obscure the fullscreen notification in Firefox for Android.  These could     have led to potential user confusion and spoofing attacks. This bug only affects Firefox for Android.
    Other versions of Firefox are unaffected. (CVE-2024-4766)

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 126.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2024-21 advisory.

  - Memory safety bugs present in Firefox 125, Firefox ESR 115.10, and Thunderbird 115.10. 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-2024-4777)

  - Multiple WebRTC threads could have claimed a newly connected audio input leading to use-after-free.
    (CVE-2024-4764)

  - A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution     in the PDF.js context. (CVE-2024-4367)

  - Web application manifests were stored by using an insecure MD5 hash which allowed for a hash collision to     overwrite another application's manifest. This could have been exploited to run arbitrary code in another     application's context.  This issue only affects Firefox for Android. Other versions of Firefox are     unaffected. (CVE-2024-4765)

  - Different techniques existed to obscure the fullscreen notification in Firefox for Android.  These could     have led to potential user confusion and spoofing attacks. This bug only affects Firefox for Android.
    Other versions of Firefox are unaffected. (CVE-2024-4766)

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
380385	Unity Linux 20.1070e Security Update: firefox (UTSA-2026-154196)	Nessus	Unity Linux Local Security Checks	Local	high
243640	Linux Distros Unpatched Vulnerability : CVE-2024-4771	Nessus	Misc.	Local	high
205525	GLSA-202408-02 : Mozilla Firefox: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	Local	critical
197537	Ubuntu 20.04 LTS : Firefox vulnerabilities (USN-6779-1)	Nessus	Ubuntu Local Security Checks	Local	high
197492	Fedora 40 : firefox (2024-eabe68b149)	Nessus	Fedora Local Security Checks	Local	high
197294	Fedora 39 : firefox (2024-a2c6c8afa9)	Nessus	Fedora Local Security Checks	Local	high
196992	Mozilla Firefox < 126.0	Nessus	Windows	Local	high
196991	Mozilla Firefox < 126.0	Nessus	MacOS X Local Security Checks	Local	high

Detections

Analytics

CVE-2024-4771

high

Tenable Plugins

high

high

critical

high

high

high

high

high