CVEvulnerability

CVE-2025-66220

7.1 HIGH Published 2025-12-03 Modified 2026-09-25 Official page ↗
Status
Analyzed
Published
2025-12-03
Last modified
2026-09-25
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.0 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N
CVSS 3.1 ([email protected])
7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Weaknesses
CWE-170

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.

Affected configurations

• envoyproxy envoy (< 1.33.13) • envoyproxy envoy (>= 1.34.0 < 1.34.11) • envoyproxy envoy (>= 1.35.0 < 1.35.7) • envoyproxy envoy (>= 1.36.0 < 1.36.3)

Related

Weakness · CWE (1)

  • CWE-170 Improper Null Termination weakness

References