CVE-2026-4724

Description

Undefined behavior in the Audio/Video component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

Affected Platforms

Weakness Type

CWE-758

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2014865
• https://www.mozilla.org/security/advisories/mfsa2026-20/
• https://www.mozilla.org/security/advisories/mfsa2026-23/