Memory Corruption Vulnerability in Firefox Products by Mozilla
CVE-2026-74990

Currently unrated

Key Information:

Vendor

Mozilla

Status
Vendor
CVE Published:
18 August 2026

What is CVE-2026-74990?

The latest reports indicate that certain bugs leading to memory corruption have been discovered in specific versions of Firefox, including Firefox ESR 115.38, 140.13, and 153.0, as well as Firefox 153. These vulnerabilities highlight the potential for exploitation under certain conditions, emphasizing the importance of keeping your browser updated. Mozilla has addressed these issues in the newly released updates, Firefox 154, and patched versions of the ESR series. Users are encouraged to upgrade to ensure enhanced security and stability.

Affected Version(s)

Firefox 115.39

Firefox 140.14

Firefox 153.1

References

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Christian Holler, Jan de Mooij, Tom Ritter and the Mozilla Fuzzing Team
.