CVEvulnerability

CVE-2021-3547

7.4 HIGH Published 2021-07-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-07-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
5.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:N
Weaknesses
CWE-295, CWE-305

Description

OpenVPN 3 Core Library version 3.6 and 3.6.1 allows a man-in-the-middle attacker to bypass the certificate authentication by issuing an unrelated server certificate using the same hostname found in the verify-x509-name option in a client configuration.

Affected configurations

• openvpn openvpn 3.6 • openvpn openvpn 3.6.1

Related

Weakness · CWE (2)

  • CWE-295 Improper Certificate Validation weakness
  • CWE-305 Authentication Bypass by Primary Weakness weakness

References