The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_76761 advisory.

    * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component     (CVE-2026-92035)

    * firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100832)

    * firefox: Use-after-free in the Layout: Text and Fonts component (CVE-2026-100784)

    * firefox: thunderbird: Privilege escalation in the DLL Services component (CVE-2026-100801)

    * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Internationalization     component (CVE-2026-100794)

    * firefox: thunderbird: Privilege escalation in the Address Bar component (CVE-2026-100820)

    * firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100777)

    * firefox: thunderbird: Information disclosure in the Networking: JAR component (CVE-2026-100766)

    * firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-100779)

    * firefox: thunderbird: Privilege escalation in the DOM: Service Workers component (CVE-2026-100807)

    * firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-100792)

    * firefox: Privilege escalation due to use-after-free in the Graphics: WebRender component     (CVE-2026-100797)

    * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the XPCOM component     (CVE-2026-100819)

    * firefox: thunderbird: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-100776)

    * firefox: thunderbird: Use-after-free in the Widget component (CVE-2026-100757)

    * firefox: Sandbox escape due to use-after-free in the Graphics component (CVE-2026-100786)

    * firefox: thunderbird: Information disclosure in the Networking component (CVE-2026-96869)

    * firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component (CVE-2026-100770)

    * firefox: thunderbird: Use-after-free in the JavaScript: WebAssembly component (CVE-2026-100769)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-100791)

    * firefox: thunderbird: Sandbox escape due to use-after-free in the Widget: Gtk component     (CVE-2026-100818)

    * firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Graphics     component (CVE-2026-100782)

    * firefox: firefox: Sandbox escape via use-after-free in DOM component (CVE-2026-100811)

    * firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100772)

    * firefox: thunderbird: Uninitialized memory in the Storage: Quota Manager component (CVE-2026-100759)

    * firefox: Sandbox escape due to use-after-free in the DOM: Core & HTML component (CVE-2026-100778)

    * firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-100758)

    * firefox: thunderbird: Sandbox escape in the Graphics component (CVE-2026-100775)

    * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender     component (CVE-2026-100781)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-100774)

    * firefox: thunderbird: Same-origin policy bypass in the WebExtensions component (CVE-2026-100803)

    * firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-100789)

    * firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100785)

    * firefox: thunderbird: Site isolation issue in the Panning and Zooming component (CVE-2026-100821)

    * firefox: thunderbird: Invalid pointer in the JavaScript: WebAssembly component (CVE-2026-100788)

    * firefox: thunderbird: Undefined behavior in the DOM: Streams component (CVE-2026-100771)

    * firefox: Sandbox escape due to use-after-free in the DOM: Content Processes component (CVE-2026-100762)

    * firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-100790)

    * firefox: thunderbird: Use-after-free in the Storage: IndexedDB component (CVE-2026-100773)

    * firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-100780)

    * firefox: thunderbird: Use-after-free in the Networking: Cache component (CVE-2026-100767)

    * firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: Playback component     (CVE-2026-100756)

    * firefox: thunderbird: Uninitialized memory in the Audio/Video component (CVE-2026-100783)

Tenable has extracted the preceding description block directly from the CIQ 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
371687	Rocky Linux 9 [CIQ] Security Update: firefox / firefox-debuginfo / firefox-debugsource / firefox-x11 Multiple Vulnerabilities (crlsa-2026_76761)	Nessus	Rocky Linux Local Security Checks	10/24/2026	10/24/2026	critical
365293	Amazon Linux 2 : firefox (ALASFIREFOX-2026-066)	Nessus	Amazon Linux Local Security Checks	10/12/2026	10/12/2026	high

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