The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 153.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-96 advisory.

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
    (CVE-2026-92005)

  - Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3,     Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3. (CVE-2026-92006, CVE-2026-92007,     CVE-2026-92008, CVE-2026-92009, CVE-2026-92010, CVE-2026-92011, CVE-2026-92012, CVE-2026-92013)

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-firefox installed on the remote host is prior to 140.16.0esr / 153.3.0esr. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-259-01 advisory.

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

Tenable has extracted the preceding description block directly from the mozilla-firefox 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 140.16.0esr / 153.3.0esr. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-259-02 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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4264-1 advisory.

    Update to Firefox Extended Support Release 153.3.0 ESRi (MFSA 2026-93, bsc#1280371)

    - CVE-2026-92005: Use-after-free in the Audio/Video: Web Codecs component.
    - CVE-2026-92006: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92007: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92008: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92009: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92010: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92011: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92012: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92013: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL     component.
    - CVE-2026-92015: Privilege escalation in the WebExtensions component.
    - CVE-2026-92016: Use-after-free in the Disability Access APIs component.
    - CVE-2026-92017: Privilege escalation in the DOM: Service Workers component.
    - CVE-2026-92018: Sandbox escape in the DOM: Core & HTML component.
    - CVE-2026-92019: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92020: Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender     component.
    - CVE-2026-92022: Use-after-free in the DOM: HTML Parser component.
    - CVE-2026-92023: Use-after-free in the XML component.
    - CVE-2026-92024: Use-after-free in the SVG component.
    - CVE-2026-92025: Use-after-free in the DOM: Navigation component.
    - CVE-2026-92026: Use-after-free in the Networking component.
    - CVE-2026-92027: Use-after-free in the DOM: Streams component.
    - CVE-2026-92028: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-92029: Use-after-free in the SVG component.
    - CVE-2026-92030: Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component.
    - CVE-2026-92031: Information disclosure in the Graphics: ImageLib component.
    - CVE-2026-92032: Sandbox escape due to invalid pointer in the Graphics component.
    - CVE-2026-92035: Sandbox escape due to incorrect boundary conditions in the Graphics component.
    - CVE-2026-92038: Mitigation bypass in the Remote Settings Client component.
    - CVE-2026-92039: Mitigation bypass in the DOM: Notifications component.
    - CVE-2026-92041: Mitigation bypass in the DOM: Networking component.
    - CVE-2026-92042: Race condition in the DOM: Content Processes component.
    - CVE-2026-92043: Privilege escalation due to incorrect boundary conditions in the Audio/Video component.
    - CVE-2026-92044: Information disclosure in the Networking: HTTP component.
    - CVE-2026-92045: Sandbox escape due to incorrect boundary conditions in the WebRTC component.
    - CVE-2026-92046: Use-after-free in the Graphics component.
    - CVE-2026-92047: Privilege escalation in the Crash Reporting component.
    - CVE-2026-92048: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92049: Use-after-free in the Widget: Win32 component.
    - CVE-2026-92052: Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component.
    - CVE-2026-92053: Privilege escalation in the Graphics: CanvasWebGL component.
    - CVE-2026-92054: Privilege escalation in the Memory component.
    - CVE-2026-92055: Privilege escalation in the DevTools component.
    - CVE-2026-92056: Use-after-free in the Graphics: Text component.
    - CVE-2026-92057: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-92058: Use-after-free in the Graphics component.
    - CVE-2026-92059: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-92060: Use-after-free in the Internationalization component.
    - CVE-2026-92062: Privilege escalation in the Session Restore component.
    - CVE-2026-92064: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92065: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92067: Use-after-free in the Widget: Gtk component.
    - CVE-2026-92068: Site isolation issue in the Reader Mode component.
    - CVE-2026-92069: Spoofing issue in the DOM: Navigation component.
    - CVE-2026-92070: Information disclosure in the Networking component.
    - CVE-2026-92071: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-92072: Incorrect boundary conditions in the Safe Browsing component.
    - CVE-2026-92073: Privilege escalation in the Enterprise Policies component.
    - CVE-2026-92074: Mitigation bypass in the Popup Blocker component.
    - CVE-2026-92075: Mitigation bypass in the Networking component.
    - CVE-2026-92076: Incorrect boundary conditions in the Networking component.
    - CVE-2026-92077: Denial-of-service in the SVG component.
    - CVE-2026-92078: Denial-of-service in the Security component.
    - CVE-2026-92079: Mitigation bypass in the Widget: Win32 component.

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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:69462 advisory.

    Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and     portability.

    Security Fix(es):

    * firefox: thunderbird: Use-after-free in the SVG component (CVE-2026-92024)

    * firefox: thunderbird: Mitigation bypass in the Remote Settings Client component (CVE-2026-92019)

    * firefox: thunderbird: Use-after-free in the Networking component (CVE-2026-92026)

    * firefox: thunderbird: Information disclosure in the Graphics: ImageLib component (CVE-2026-92031)

    * firefox: thunderbird: Sandbox escape due to invalid pointer in the Graphics component (CVE-2026-92032)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92010)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92006)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92011)

    * firefox: thunderbird: Use-after-free in the DOM: Streams component (CVE-2026-92027)

    * firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-92028)

    * firefox: thunderbird: Privilege escalation in the WebExtensions component (CVE-2026-92015)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92013)

    * firefox: thunderbird: Use-after-free in the Disability Access APIs component (CVE-2026-92016)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92012)

    * firefox: thunderbird: Use-after-free in the DOM: HTML Parser component (CVE-2026-92022)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics     component (CVE-2026-92014)

    * firefox: thunderbird: Sandbox escape in the DOM: Core & HTML component (CVE-2026-92018)

    * firefox: thunderbird: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-92021)

    * firefox: thunderbird: Use-after-free in the Audio/Video: Web Codecs component (CVE-2026-92005)

    * firefox: thunderbird: Privilege escalation in the DOM: Service Workers component (CVE-2026-92017)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92009)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    WebRender component (CVE-2026-92020)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92008)

    * firefox: thunderbird: Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component     (CVE-2026-92030)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics:
    CanvasWebGL component (CVE-2026-92007)

    * firefox: thunderbird: Use-after-free in the DOM: Navigation component (CVE-2026-92025)

    * firefox: thunderbird: Use-after-free in the SVG component (CVE-2026-92029)

    * firefox: thunderbird: Use-after-free in the XML component (CVE-2026-92023)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-69462 advisory.

    [140.16.0-1.0.1]
    - Fix firefox-oracle-default-prefs.js for new nss [Orabug: 37079773]
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [140.16.0]
    - Add debranding patches (Mustafa Gezen)
    - Add OpenELA default preferences (Louis Abel)

    [140.16.0-1]
    - Update to 140.16.0 ESR

Tenable has extracted the preceding description block directly from the Oracle 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.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
346319	Mozilla Thunderbird < 153.3	Nessus	MacOS X Local Security Checks	2026/9/16	2026/10/21	critical
346748	Slackware Linux 15.0 / current mozilla-firefox Multiple Vulnerabilities (SSA:2026-259-01)	Nessus	Slackware Local Security Checks	2026/9/16	2026/9/22	critical
346749	Slackware Linux 15.0 / current mozilla-thunderbird Multiple Vulnerabilities (SSA:2026-259-02)	Nessus	Slackware Local Security Checks	2026/9/16	2026/9/23	critical
348276	SUSE SLED15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:4264-1)	Nessus	SuSE Local Security Checks	2026/9/19	2026/9/25	critical
348681	RHEL 9 : firefox (RHSA-2026:69462)	Nessus	Red Hat Local Security Checks	2026/9/21	2026/9/25	critical
349136	Oracle Linux 9 : firefox (ELSA-2026-69462)	Nessus	Oracle Linux Local Security Checks	2026/9/23	2026/9/23	critical

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