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CVE-2026-4697highCWE-754CWE-787

Incorrect boundary conditions in the Audio/Video: Web Codecs component

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.7%
exploitation probability
0.7%top 49% of all CVEs
observed exploitation
nono source reports it
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H