Moole Vulnerability Database

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High

CVE-2026-6751

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

VectorNETWORK

PublishedApr 21, 2026, 13:16

Published Bysecurity@mozilla.org

Base Score

Score7.3

Affected Versions

No affected versions found.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2025883
https://www.mozilla.org/security/advisories/mfsa2026-30/
https://www.mozilla.org/security/advisories/mfsa2026-32/
https://www.mozilla.org/security/advisories/mfsa2026-33/
https://www.mozilla.org/security/advisories/mfsa2026-34/

Weakness Type

CWE-457

CVSS Metrics

Base Score

7.3

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Base SeverityHigh

Version

3.1

Attack Vector (AV)

NETWORK