CVE-2026-4697 in Firefox
Summary
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
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Responsible
mozilla
Reservation
03/24/2026
Disclosure
03/24/2026
Status
Confirmed
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 352746 | Mozilla Firefox Web Codecs memory corruption | 119 | Not defined | Official fix | CVE-2026-4697 |