RHSA-2026:0127HighCVSS 7.5

Red Hat Security Advisory: firefox security update

Published
January 6, 2026
Last Modified
October 13, 2026

🔗 CVE IDs covered (10)

CVE-2025-14321 →CVE-2025-14322 →CVE-2025-14325 →CVE-2025-14329 →CVE-2025-14330 →CVE-2025-14331 →CVE-2025-14333 →CVE-2025-14323 →CVE-2025-14324 →CVE-2025-14328 →

📋 Description

CVE-2025-14321 — firefox: thunderbird: Use-after-free in the WebRTC: Signaling component CVE-2025-14322 — firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component CVE-2025-14323 — firefox: thunderbird: Privilege escalation in the DOM: Notifications component CVE-2025-14324 — firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component CVE-2025-14325 — firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component CVE-2025-14328 — firefox: thunderbird: Privilege escalation in the Netmonitor component CVE-2025-14329 — firefox: thunderbird: Privilege escalation in the Netmonitor component CVE-2025-14330 — firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component CVE-2025-14331 — firefox: thunderbird: Same-origin policy bypass in the Request Handling component CVE-2025-14333 — firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146

🎯 Affected products14

  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-0:140.6.0-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-0:140.6.0-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-0:140.6.0-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-0:140.6.0-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-0:140.6.0-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debuginfo-0:140.6.0-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debuginfo-0:140.6.0-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debuginfo-0:140.6.0-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debuginfo-0:140.6.0-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debugsource-0:140.6.0-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debugsource-0:140.6.0-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debugsource-0:140.6.0-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • firefox-debugsource-0:140.6.0-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (13)