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.

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.

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.

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 remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03008-1 advisory.

    - Firefox Extended Support Release 140.2.0 ESR       MFSA 2025-67 (bsc#1248162)
      * CVE-2025-9179 (bmo#1979527):
        Sandbox escape due to invalid pointer in the Audio/Video: GMP         component
      * CVE-2025-9180 (bmo#1979782):
        Same-origin policy bypass in the Graphics: Canvas2D component
      * CVE-2025-9181 (bmo#1977130):
        Uninitialized memory in the JavaScript Engine component
      * CVE-2025-9182 (bmo#1975837):
        Denial-of-service due to out-of-memory in the Graphics:
        WebRender component
      * CVE-2025-9183 (bmo#1976102):
        Spoofing issue in the Address Bar component
      * CVE-2025-9184 (bmo#1929482, bmo#1976376, bmo#1979163,         bmo#1979955):
        Memory safety bugs fixed in Firefox ESR 140.2, Thunderbird         ESR 140.2, Firefox 142 and Thunderbird 142
      * CVE-2025-9185 (bmo#1970154, bmo#1976782, bmo#1977166):
        Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR         128.14, Thunderbird ESR 128.14, Firefox ESR 140.2,         Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142
      * CVE-2025-9187 (bmo#1825621, bmo#1970079, bmo#1976736,         bmo#1979072): Memory safety bugs fixed in Firefox 142 and         Thunderbird 142

    - Other fixes:
      * Ensure the use of the correct file-picker on KDE (bsc#1226112)

Tenable has extracted the preceding description block directly from the SUSE 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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03007-1 advisory.

    Updated to Mozilla Thunderbird 140.2 MFSA 2025-72 (bsc#1248162):
      * CVE-2025-9179: Sandbox escape due to invalid pointer in the Audio/Video: GMP         component
      * CVE-2025-9180: Same-origin policy bypass in the Graphics: Canvas2D component
      * CVE-2025-9181: Uninitialized memory in the JavaScript Engine component
      * CVE-2025-9182: Denial-of-service due to out-of-memory in the Graphics:
        WebRender component
      * CVE-2025-9184: Memory safety bugs fixed in Firefox ESR 140.2, Thunderbird         ESR 140.2, Firefox 142 and Thunderbird 142
      * CVE-2025-9185: Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR         128.14, Thunderbird ESR 128.14, Firefox ESR 140.2,         Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142

    Other fixes:
      * Users were unable to use Fastmail calendars due to         missing OAuth settings
      * Account setup error handling was broken for Account         hub
      * Menu bar was hidden after updating from 128esr to         140esr

Tenable has extracted the preceding description block directly from the SUSE 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 SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:03009-1 advisory.

    - Firefox Extended Support Release 140.2.0 ESR       MFSA 2025-67 (bsc#1248162)
      * CVE-2025-9179 (bmo#1979527):
        Sandbox escape due to invalid pointer in the Audio/Video: GMP         component
      * CVE-2025-9180 (bmo#1979782):
        Same-origin policy bypass in the Graphics: Canvas2D component
      * CVE-2025-9181 (bmo#1977130):
        Uninitialized memory in the JavaScript Engine component
      * CVE-2025-9182 (bmo#1975837):
        Denial-of-service due to out-of-memory in the Graphics:
        WebRender component
      * CVE-2025-9183 (bmo#1976102):
        Spoofing issue in the Address Bar component
      * CVE-2025-9184 (bmo#1929482, bmo#1976376, bmo#1979163,         bmo#1979955):
        Memory safety bugs fixed in Firefox ESR 140.2, Thunderbird         ESR 140.2, Firefox 142 and Thunderbird 142
      * CVE-2025-9185 (bmo#1970154, bmo#1976782, bmo#1977166):
        Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR         128.14, Thunderbird ESR 128.14, Firefox ESR 140.2,         Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142
      * CVE-2025-9187 (bmo#1825621, bmo#1970079, bmo#1976736,         bmo#1979072): Memory safety bugs fixed in Firefox 142 and         Thunderbird 142

    - Other fixes:
      * Ensure the use of the correct file-picker on KDE (bsc#1226112)

Tenable has extracted the preceding description block directly from the SUSE 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 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 mozilla-thunderbird installed on the remote host is prior to 140.2.0esr. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2025-232-01 advisory.

    New mozilla-thunderbird packages are available for Slackware 15.0 and -current to fix security issues.

Tenable has extracted the preceding description block directly from the mozilla-thunderbird 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-e689575030 advisory.

    - Updated to new upstream release (142.0)

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 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.

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.

The version of Thunderbird 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 mfsa2025-72 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 Thunderbird installed on the remote Windows host is prior to 140.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-72 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 Firefox ESR installed on the remote Windows 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 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 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 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.

ID	Name	Product	Family	Type	Severity
297659	Ubuntu 22.04 LTS : Thunderbird vulnerabilities (USN-7991-1)	Nessus	Ubuntu Local Security Checks	Local	medium
261736	Amazon Linux 2023 : firefox (ALAS2023-2025-1171)	Nessus	Amazon Linux Local Security Checks	Local	low
260175	Linux Distros Unpatched Vulnerability : CVE-2025-9184	Nessus	Misc.	Local	high
258109	SUSE SLED15: MozillaFirefox / MozillaFirefox-branding-upstream / etc (SUSE-SU-2025:03008-1)	Nessus	SuSE Local Security Checks	Local	critical
258108	SUSE SLED15: MozillaThunderbird / MozillaThunderbird-translations-common / etc (SUSE-SU-2025:03007-1)	Nessus	SuSE Local Security Checks	Local	high
258100	SUSE SLES12: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2025:03009-1)	Nessus	SuSE Local Security Checks	Local	critical
255286	FreeBSD : Mozilla -- memory safety bugs (feb359ef-7eb0-11f0-ba14-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	Local	high
253432	Slackware Linux 15.0 / current mozilla-thunderbird Multiple Vulnerabilities (SSA:2025-232-01)	Nessus	Slackware Local Security Checks	Local	critical
252914	Fedora 42 : firefox (2025-e689575030)	Nessus	Fedora Local Security Checks	Local	high
252321	Mozilla Firefox < 142.0	Nessus	Windows	Local	critical
252320	Mozilla Firefox < 142.0	Nessus	MacOS X Local Security Checks	Local	critical
252319	Mozilla Thunderbird < 140.2	Nessus	MacOS X Local Security Checks	Local	high
252318	Mozilla Thunderbird < 140.2	Nessus	Windows	Local	high
252315	Mozilla Firefox ESR < 140.2	Nessus	Windows	Local	high
252314	Mozilla Firefox ESR < 140.2	Nessus	MacOS X Local Security Checks	Local	high
252313	Mozilla Thunderbird < 142.0	Nessus	MacOS X Local Security Checks	Local	critical
252312	Mozilla Thunderbird < 142.0	Nessus	Windows	Local	critical

Detections

Analytics

CVE-2025-9184

high

Tenable Plugins

medium

low

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critical

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critical

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critical

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critical

critical