Memory Safety Vulnerabilities in Firefox and Thunderbird by Mozilla
CVE-2025-3034

8.1HIGH

Key Information:

Vendor
Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
1 April 2025

Summary

Mozilla's Firefox and Thunderbird are impacted by memory safety issues that could allow for potential memory corruption. Versions prior to 137 exhibit these vulnerabilities, which represent a significant risk as they may be exploitable under certain conditions. This can potentially lead to arbitrary code execution if successfully exploited. Mozilla has addressed these bugs in the latest versions, and users are advised to update promptly to secure their systems against these weaknesses.

Affected Version(s)

Firefox < 137

Thunderbird < 137

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1894100%2...
https://www.mozilla.org/security/advisories/mfsa2025-20/
https://www.mozilla.org/security/advisories/mfsa2025-23/

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Andrew McCreight and the Mozilla Fuzzing Team
.