CVE-2025-66220 (GCVE-0-2025-66220)

Vulnerability from cvelistv5 – Published: 2025-12-03 18:31 – Updated: 2025-12-03 19:10
VLAI
Title
Envoy’s TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte
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.
Severity
5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 19:10 UTC
CWE
  • CWE-170 - Improper Null Termination
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
envoyproxy envoy Affected: >= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6
Affected: >= 1.34.0, <= 1.34.10
Affected: <= 1.33.12
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