CVE-2025-1942
Critical · CVSS 9.8- CVSS
- 9.8
- nvd
- EPSS
- 0.48%
- 39th pct
- KEV
- No
- Class
- other
- 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.
References
Status: profiled · ingested 2026-10-05T18:00:53.000Z