CVE-2026-6751

HIGH

thunderbird security update

Details

CVSS v3: 7.3
NVD published: 2026-04-21 13:16:21
EPSS: <0.1% probability · 17.8th percentile — 2026-05-06
Affected versions: cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Summary: 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.
Remediation: Not available in our cache.
Exploit info: Not available in our cache.

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Information is aggregated from multiple authoritative sources for convenience; verify with NVD and vendors before operational decisions.