The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 150.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-38 advisory.

  - Information disclosure due to incorrect boundary conditions in the Audio/Video component. This     vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird     150.0.1, and Thunderbird 140.10.1. (CVE-2026-7320)

  - Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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-2026-7322, CVE-2026-7323)

  - Memory safety bugs present in Thunderbird 150.0.0. 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-2026-7324)

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 150.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-35 advisory.

  - Memory safety bugs present in Firefox ESR 140.10.0 and Firefox 150.0.0. 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-2026-7323)

  - Information disclosure due to incorrect boundary conditions in the Audio/Video component. This     vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1.
    (CVE-2026-7320)

  - Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 150.0.0. 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-2026-7322)

  - Memory safety bugs present in Firefox 150.0.0. 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-2026-7324)

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 Thunderbird 150.0.0. 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 150.0.1 and Thunderbird 150.0.1. (CVE-2026-7324)

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

The version of Thunderbird installed on the remote Windows host is prior to 150.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-38 advisory.

  - Information disclosure due to incorrect boundary conditions in the Audio/Video component. This     vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird     150.0.1, and Thunderbird 140.10.1. (CVE-2026-7320)

  - Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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-2026-7322, CVE-2026-7323)

  - Memory safety bugs present in Thunderbird 150.0.0. 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-2026-7324)

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 150.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-35 advisory.

  - Memory safety bugs present in Firefox ESR 140.10.0 and Firefox 150.0.0. 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-2026-7323)

  - Information disclosure due to incorrect boundary conditions in the Audio/Video component. This     vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1.
    (CVE-2026-7320)

  - Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 150.0.0. 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-2026-7322)

  - Memory safety bugs present in Firefox 150.0.0. 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-2026-7324)

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 a vulnerability as referenced in the 560f4838-4394-11f1-a190-b42e991fc52e advisory.

    https://bugzilla.mozilla.org/buglist.cgi?bug_id=2029419%2C2029717%2C2029769%2C2029886 reports:

            Memory safety bugs. 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 this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
311289	Mozilla Thunderbird < 150.0.1	Nessus	MacOS X Local Security Checks	4/30/2026	5/8/2026	high
310740	Mozilla Firefox < 150.0.1	Nessus	MacOS X Local Security Checks	4/28/2026	5/1/2026	high
311256	Linux Distros Unpatched Vulnerability : CVE-2026-7324	Nessus	Misc.	4/30/2026	5/4/2026	high
311288	Mozilla Thunderbird < 150.0.1	Nessus	Windows	4/30/2026	5/8/2026	high
310739	Mozilla Firefox < 150.0.1	Nessus	Windows	4/28/2026	5/1/2026	high
311024	FreeBSD : firefox -- Memory safety bugs (560f4838-4394-11f1-a190-b42e991fc52e)	Nessus	FreeBSD Local Security Checks	4/29/2026	4/29/2026	high

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