The remote Ubuntu 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7991-1 advisory.

    Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially     crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of     service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute     arbitrary code.

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 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 ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141.
    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 142,     Firefox ESR 140.2, Thunderbird 142, and Thunderbird 140.2. (CVE-2025-9184)

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

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 142.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-70 advisory.

  - Memory safety bugs present in Firefox 141 and Thunderbird 141. 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-2025-9187)

  - An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This     process is also heavily sandboxed, but represents slightly different privileges from the content process.
    (CVE-2025-9179)

  - Same-origin policy bypass in the Graphics: Canvas2D component. (CVE-2025-9180)

  - Uninitialized memory in the JavaScript Engine component. (CVE-2025-9181)

  - Denial-of-service due to out-of-memory in the Graphics: WebRender component. (CVE-2025-9182)

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 ESR installed on the remote macOS or Mac OS X host is prior to 140.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-67 advisory.

  - Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR     140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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-2025-9185)

  - An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This     process is also heavily sandboxed, but represents slightly different privileges from the content process.
    (CVE-2025-9179)

  - Same-origin policy bypass in the Graphics: Canvas2D component. (CVE-2025-9180)

  - Uninitialized memory in the JavaScript Engine component. (CVE-2025-9181)

  - Denial-of-service due to out-of-memory in the Graphics: WebRender component. (CVE-2025-9182)

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 feb359ef-7eb0-11f0-ba14-b42e991fc52e advisory.

    security@mozilla.org reports:
    Memory safety bugs present in Firefox ESR 115.26, Firefox               ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1,               Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141.
              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 these issues 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 142.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-70 advisory.

  - Memory safety bugs present in Firefox 141 and Thunderbird 141. 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-2025-9187)

  - An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This     process is also heavily sandboxed, but represents slightly different privileges from the content process.
    (CVE-2025-9179)

  - Same-origin policy bypass in the Graphics: Canvas2D component. (CVE-2025-9180)

  - Uninitialized memory in the JavaScript Engine component. (CVE-2025-9181)

  - Denial-of-service due to out-of-memory in the Graphics: WebRender component. (CVE-2025-9182)

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 142.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-64 advisory.

  - Memory safety bugs present in Firefox 141 and Thunderbird 141. 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-2025-9187)

  - An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This     process is also heavily sandboxed, but represents slightly different privileges from the content process.
    (CVE-2025-9179)

  - Same-origin policy bypass in the Graphics: Canvas2D component. (CVE-2025-9180)

  - Uninitialized memory in the JavaScript Engine component. (CVE-2025-9181)

  - Spoofing issue in the Address Bar component of Firefox Focus for Android. (CVE-2025-9186)

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1171 advisory.

    Improper Input Validation vulnerability in Mozilla neqo leads to an unexploitable crash..This issue     affects neqo: from 0.4.24 through 0.13.2. (CVE-2025-6703)

    An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This     process is also heavily sandboxed, but represents slightly different privileges from the content process.
    This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2,     Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2. (CVE-2025-9179)

    'Same-origin policy bypass in the Graphics: Canvas2D component.' This vulnerability affects Firefox < 142,     Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14,     and Thunderbird < 140.2. (CVE-2025-9180)

    Uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 142, Firefox     ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.
    (CVE-2025-9181)

    'Denial-of-service due to out-of-memory in the Graphics: WebRender component.' This vulnerability affects     Firefox < 142, Firefox ESR < 140.2, Thunderbird < 142, and Thunderbird < 140.2. (CVE-2025-9182)

    Spoofing issue in the Address Bar component. This vulnerability affects Firefox < 142 and Firefox ESR <     140.2. (CVE-2025-9183)

    Memory safety bugs present in Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141.
    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 affects Firefox < 142, Firefox     ESR < 140.2, Thunderbird < 142, and Thunderbird < 140.2. (CVE-2025-9184)

    Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR     140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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 affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14,     Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2. (CVE-2025-9185)

Tenable has extracted the preceding description block directly from the tested product 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
297659	Ubuntu 22.04 LTS : Thunderbird vulnerabilities (USN-7991-1)	Nessus	Ubuntu Local Security Checks	2/3/2026	2/24/2026	medium
260175	Linux Distros Unpatched Vulnerability : CVE-2025-9184	Nessus	Misc.	9/1/2025	7/25/2026	high
252313	Mozilla Thunderbird < 142.0	Nessus	MacOS X Local Security Checks	8/19/2025	1/21/2026	critical
252314	Mozilla Firefox ESR < 140.2	Nessus	MacOS X Local Security Checks	8/19/2025	11/18/2025	high
255286	FreeBSD : Mozilla -- memory safety bugs (feb359ef-7eb0-11f0-ba14-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	8/26/2025	1/21/2026	high
252312	Mozilla Thunderbird < 142.0	Nessus	Windows	8/19/2025	1/21/2026	critical
252320	Mozilla Firefox < 142.0	Nessus	MacOS X Local Security Checks	8/19/2025	11/18/2025	critical
261736	Amazon Linux 2023 : firefox (ALAS2023-2025-1171)	Nessus	Amazon Linux Local Security Checks	9/8/2025	10/29/2025	low

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