cvedb.io
CVE-2025-66220
MEDIUM · CVSS 5
EPSS exploitation probability: 0%
Published 2025-12-03T19:15:58.010 · Last modified 2026-06-17T09:56:30.153

Summary

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\0) inside an OTHERNAME SAN value as valid matches.

Affected products

envoyproxy — envoy

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.