CVE-2026-8091
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-8091.html
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-8091
Vendor advisory: security@mozilla.org — https://www.mozilla.org/security/advisories/mfsa2026-42/
Vendor advisory: security@mozilla.org — https://www.mozilla.org/security/advisories/mfsa2026-39/
Vendor advisory: security@mozilla.org — https://www.mozilla.org/security/advisories/mfsa2026-36/
Vendor advisory: security@mozilla.org — https://www.mozilla.org/security/advisories/mfsa2026-33/
Vendor advisory: security@mozilla.org — https://www.mozilla.org/security/advisories/mfsa2026-30/
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | sid | fixed | 150.0-1 |
| debian | bookworm | fixed | 140.10.1esr-1~deb12u1 |
| debian | bullseye | fixed | 140.10.1esr-1~deb11u1 |
| debian | forky | fixed | 140.10.1esr-1 |
| debian | trixie | fixed | 140.10.1esr-1~deb13u1 |
| sles | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| mozilla | firefox | {"endExcluding":"115.35.2"} | 115.35.2 |
| mozilla | thunderbird | {"startIncluding":"140.0","endExcluding":"140.10.1"} | 140.10.1 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2029301
- https://www.mozilla.org/security/advisories/mfsa2026-30/
- https://www.mozilla.org/security/advisories/mfsa2026-33/
- https://www.mozilla.org/security/advisories/mfsa2026-36/
- https://www.mozilla.org/security/advisories/mfsa2026-39/
- https://www.mozilla.org/security/advisories/mfsa2026-42/
- https://security-tracker.debian.org/tracker/CVE-2026-8091
- https://www.suse.com/security/cve/CVE-2026-8091.html
CWEs
CWE-754
Verify integrity in audit chain (admin only). AS-IS.