How severe is CVE-2025-66220?

CVE-2025-66220 has a CVSS v3 score of 5 (MEDIUM).

CVE-2025-66220

Name: envoy
Author: envoyproxy

5.0MEDIUM

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 certif

Publicado: 12/3/2025Atualizado: 12/5/2025

Descrição

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.

Análise IADesenvolvido por IA

Produtos Afetados

envoyproxyenvoy

Referências

https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p
ExploitVendor Advisory