Memory Safety Issues in Firefox and Thunderbird Products by Mozilla
CVE-2025-14332

7.3HIGH

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
9 December 2025

What is CVE-2025-14332?

Memory safety vulnerabilities have been identified in Mozilla's Firefox and Thunderbird versions 145, which exhibit signs of memory corruption. If exploited, these bugs could potentially allow attackers to execute arbitrary code on affected systems. The vulnerabilities underscore the importance of keeping software up to date, as they have been addressed in Firefox and Thunderbird version 146. Users are advised to update their browsers to mitigate risks associated with these memory safety issues.

Affected Version(s)

Firefox < 146

Thunderbird < 146

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1963153%2...
https://www.mozilla.org/security/advisories/mfsa2025-92/
https://www.mozilla.org/security/advisories/mfsa2025-95/

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jon Coppeard, Maurice Dauer and the Mozilla Fuzzing Team
JSON
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CVE-2025-14332 : Memory Safety Issues in Firefox and Thunderbird Products by Mozilla