Memory Corruption Vulnerabilities in Firefox by Mozilla
CVE-2026-84142

Currently unrated

Key Information:

Vendor

Mozilla

Status
Vendor
CVE Published:
1 September 2026

What is CVE-2026-84142?

Firefox 154 contains internal bugs that suggest potential memory corruption vulnerabilities. While these issues do not have fixed exploits, they indicate possible security threats that could be leveraged if left unaddressed. The Mozilla team has resolved these issues in Firefox 155, enhancing the security posture of the browser. Users are encouraged to update to the latest version to mitigate these risks.

Affected Version(s)

Firefox 155

References

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alexandre Poirot, Christian Holler, Sebastian Hengst and the Mozilla Fuzzing Team
.