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.
Affected products
mozilla: firefox; mozilla: thunderbird
References10
- www.mozilla.org/security/advisories/mfsa2026-30/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-33/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-36/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-39/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-42/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=2029301 Permissions Required
- access.redhat.com/errata/RHSA-2026:19153
- access.redhat.com/errata/RHSA-2026:19157
- access.redhat.com/errata/RHSA-2026:19348
- access.redhat.com/errata/RHSA-2026:19370
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 41 · as of 13 November 2026
- CWE
- CWE-754CWE-805
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