RHSA-2026:25015HighCVSS 7.5

Red Hat Security Advisory: firefox security update

Published
June 10, 2026
Last Modified
November 6, 2026

🔗 CVE IDs covered (3)

CVE-2026-8092 →CVE-2026-8094 →CVE-2026-8090 →

📋 Description

CVE-2026-8090 — firefox: thunderbird: Use-after-free in the DOM: Networking component CVE-2026-8092 — firefox: Memory safety bugs fixed in Firefox ESR 115.35.2, Firefox ESR 140.10.2 and Firefox 150.0.2 CVE-2026-8094 — firefox: thunderbird: Other issue in the WebRTC component

🎯 Affected products10

  • Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • firefox-0:140.10.2-1.el8_6.src as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • firefox-0:140.10.2-1.el8_6.src as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • firefox-0:140.10.2-1.el8_6.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • firefox-0:140.10.2-1.el8_6.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • firefox-debuginfo-0:140.10.2-1.el8_6.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • firefox-debuginfo-0:140.10.2-1.el8_6.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • firefox-debugsource-0:140.10.2-1.el8_6.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • firefox-debugsource-0:140.10.2-1.el8_6.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)

✅ 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

🔗 References (6)