CVE-2026-8091
CRITICAL severity · CVSS 9.8 · CWE-754
9.8CVSS CRITICAL
Summary
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2026-30/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-33/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-36/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-39/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-42/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=2029301