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CVE-2026-4724
CRITICAL9.1
Description
Undefined behavior in the Audio/Video component. This vulnerability affects Firefox < 149 and Thunderbird < 149.
CVE Details
CVSS v3.1 Score9.1
SeverityCRITICAL
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack VectorNETWORK
ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
Published3/24/2026
Last Modified3/25/2026
Sourcenvd
Honeypot Sightings0
Affected Products
mozilla:firefoxmozilla:thunderbird
Weaknesses (CWE)
CWE-758
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2014865(security@mozilla.org)
https://www.mozilla.org/security/advisories/mfsa2026-20/(security@mozilla.org)
https://www.mozilla.org/security/advisories/mfsa2026-23/(security@mozilla.org)
IOC Correlations
No correlations recorded
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