HIGHCVSS 7.5

CVE-2025-5270

CVE-2025-5270 updated by NVD

Modified: 2026-10-02
Sources: nvd

Summary

In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability was fixed in Firefox 139 and Thunderbird 139.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-5270

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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