CVEvulnerability
CVE-2025-1942
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2025-03-04
- Last modified
- 2026-10-05
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-908
Description
When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string. This vulnerability was fixed in Firefox 136 and Thunderbird 136.
Affected configurations
• mozilla firefox (< 136.0)
• mozilla thunderbird (< 136.0)
Related
Weakness · CWE (1)
- CWE-908 Use of Uninitialized Resource weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1947139 Issue Tracking
- https://www.mozilla.org/security/advisories/mfsa2025-14/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-17/ Vendor Advisory