Memory Safety Vulnerabilities in Firefox and Thunderbird by Mozilla
CVE-2025-1020

Currently unrated

Key Information:

Vendor
Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
4 February 2025

Summary

Memory safety vulnerabilities in Firefox and Thunderbird versions prior to 135 have been identified, showcasing evidence of potential memory corruption issues. These vulnerabilities may allow for arbitrary code execution if successfully exploited. Users are strongly urged to upgrade to the latest versions to mitigate risks and ensure enhanced security.

Affected Version(s)

Firefox < 135

Thunderbird < 135

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1939063%2...
https://www.mozilla.org/security/advisories/mfsa2025-07/
https://www.mozilla.org/security/advisories/mfsa2025-11/

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The Mozilla Fuzzing Team
.