Information disclosure due to incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://www.mozilla.org/security/advisories/mfsa2026-35/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-36/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-37/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-38/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-39/ Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · mozillaNVD modified 2026-10-26 20:10
Affected (CPE criteria) 4
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
References 31
- https://bugzilla.mozilla.org/show_bug.cgi?id=2027433 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-35/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-36/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-37/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-38/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-39/ Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19153
- https://access.redhat.com/errata/RHSA-2026:19157
- https://access.redhat.com/errata/RHSA-2026:19348
- https://access.redhat.com/errata/RHSA-2026:19370
- https://access.redhat.com/errata/RHSA-2026:19588
- https://access.redhat.com/errata/RHSA-2026:20586
- https://access.redhat.com/errata/RHSA-2026:21743
- https://access.redhat.com/errata/RHSA-2026:22324
- https://access.redhat.com/errata/RHSA-2026:22408
- https://access.redhat.com/errata/RHSA-2026:22409
- https://access.redhat.com/errata/RHSA-2026:22410
- https://access.redhat.com/errata/RHSA-2026:22708
- https://access.redhat.com/errata/RHSA-2026:22712
- https://access.redhat.com/errata/RHSA-2026:22847
- https://access.redhat.com/errata/RHSA-2026:24345
- https://access.redhat.com/errata/RHSA-2026:24717
- https://access.redhat.com/errata/RHSA-2026:24718
- https://access.redhat.com/errata/RHSA-2026:24719
- https://access.redhat.com/errata/RHSA-2026:24721
- https://access.redhat.com/errata/RHSA-2026:24844
- https://access.redhat.com/errata/RHSA-2026:24846
- https://access.redhat.com/errata/RHSA-2026:25014
- https://access.redhat.com/security/cve/CVE-2026-7320
- https://bugzilla.redhat.com/show_bug.cgi?id=2463483
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7320.json