The remote AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:27717 advisory.

    * firefox: thunderbird: Sandbox escape in the DOM: Workers component (CVE-2026-12294)
      * firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing     component (CVE-2026-12313)
      * firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing     component (CVE-2026-12311)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12290)
      * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox     152 and Thunderbird 152 (CVE-2026-12327)
      * firefox: thunderbird: JIT miscompilation in the DOM: Core & HTML component (CVE-2026-12299)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12329)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12312)
      * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12302)
      * firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird     ESR 140.12, Firefox 152 and Thunderbird 152 (CVE-2026-12328)
      * firefox: thunderbird: Incorrect boundary conditions in the Internationalization component     (CVE-2026-12330)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12314)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12309)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12310)
      * firefox: thunderbird: Denial-of-service in the Graphics: ImageLib component (CVE-2026-12325)
      * firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-12295)
      * firefox: thunderbird: Privilege escalation in the Graphics: WebRender component (CVE-2026-12289)
      * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-12315)
      * firefox: thunderbird: Sandbox escape in the Security: Process Sandboxing component (CVE-2026-12296)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12306)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12307)
      * firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Networking component     (CVE-2026-12297)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12305)
      * firefox: thunderbird: Incorrect boundary conditions in the Web Audio component (CVE-2026-12292)
      * firefox: thunderbird: Memory safety bug fixed in Thunderbird ESR 140.12 (CVE-2026-12308)
      * firefox: thunderbird: Incorrect boundary conditions in the Graphics: CanvasWebGL component     (CVE-2026-12324)
      * firefox: thunderbird: Same-origin policy bypass in the Networking: Cookies component (CVE-2026-12304)
      * firefox: thunderbird: Use-after-free in the Networking: HTTP component (CVE-2026-12291)
      * firefox: thunderbird: Memory safety bug fixed in Firefox ESR 140.12 (CVE-2026-12298)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

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

Detections

Analytics

AlmaLinux 8 : firefox (ALSA-2026:27717)

critical Nessus Plugin ID 322287

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Jul 2, 2026, 3:38 PM CVSS metrics ("CVSSv3 score" set to 9.1) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N") CVSSv3 score source (set to "CVE-2026-12315") Plugin Feed: 202607021538
Version 1.2 Jun 26, 2026, 4:08 PM Plugin metadata (Add IAVM Info) Plugin Feed: 202606261608
Version 1.1 Jun 24, 2026, 7:46 AM New Plugin Feed: 202606240746