Integer Overflow Vulnerability in Firefox by Mozilla
CVE-2026-84141

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 1 September 2026

What is CVE-2026-84141?

The vulnerability involves an integer overflow in the Graphics: ImageLib component of Firefox, which could potentially allow for exploitation under specific conditions. This issue was addressed in Firefox version 155 and Firefox ESR version 153.2. Users are encouraged to update their browsers to the latest versions to ensure enhanced security and protection against exploits.

Affected Version(s)

Firefox 153.2

Firefox 155

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2063994

https://www.mozilla.org/security/advisories/mfsa2026-82/

https://www.mozilla.org/security/advisories/mfsa2026-85/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Sep 1, 2026
Vulnerability Reserved
Sep 1, 2026

Credit

nguyentuanhung1149

CVE-2026-84141 Data

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