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Description

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.

PUBLISHED Reserved 2025-11-24 | Published 2025-12-03 | Updated 2025-12-03 | Assigner GitHub_M




MEDIUM: 5.0CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N

Problem types

CWE-170: Improper Null Termination

Product status

>= 1.36.0, <= 1.36.2
affected

>= 1.35.0, <= 1.35.6
affected

>= 1.34.0, <= 1.34.10
affected

<= 1.33.12
affected

References

github.com/.../envoy/security/advisories/GHSA-rwjg-c3h2-f57p

cve.org (CVE-2025-66220)

nvd.nist.gov (CVE-2025-66220)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.