CVE Catalog

CVE-2026-106017

MediumCVSS 6.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

9th percentile - higher than 9% of all known CVEs

Summary

The OpenVPN 3 Core library versions 3.4 through 3.11.7 has improper certificate validation, allowing attackers to circumvent extended key usage restrictions.

Risk Assessment

An attacker could use a certificate not intended for the purpose to gain unauthorized access to VPN connections. This may undermine trust in the VPN infrastructure and enable impersonation of other services.

Recommendation

Update the OpenVPN 3 Core library to a version later than 3.11.7. Verify that certificates in use have properly defined extended key usage.

Related vulnerabilities

Original NVD description (English source)

Improper certificate validation in the OpenVPN 3 Core library version 3.4 through 3.11.7 allows attackers to circumvent extended key usage restrictions.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS