PT-2026-33937 · Mozilla · Firefox

Joren Afman · Published 2026-04-21 · Updated 2026-04-21 · CVE-2026-6751

NVD

Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150 and Firefox ESR 140.10.

Related Identifiers

CVE-2026-6751

Affected Products

Firefox

References · 4

• https://mozilla.org/security/advisories/mfsa2026-30 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2026-32 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-6751 · Security Note
• https://bugzilla.mozilla.org/show_bug.cgi?id=2025883 · Note