Integer Overflow Vulnerability in Firefox's Audio/Video Playback Component
CVE-2026-6783

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 21 April 2026

What is CVE-2026-6783?

The vulnerability involves an integer overflow in the Audio/Video Playback component of Firefox, which can lead to unintended consequences during media processing. This issue has been identified as a risk to users, prompting Mozilla to implement a fix in Firefox version 150. Users are advised to update to this version to safeguard against potential exploitation of this flaw.

Affected Version(s)

Firefox 150

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2027564

https://www.mozilla.org/security/advisories/mfsa2026-30/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Apr 21, 2026
Vulnerability Reserved
Apr 21, 2026

Credit

crixer

CVE-2026-6783 Data

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