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CRITICALCVSS 9.8

CVE-2025-1942

CVE-2025-1942 updated by NVD

Modified
2026-10-07
Sources
nvd

Summary

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

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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