CVE-2026-106017 PUBLISHED

Assigner: OpenVPN
Reserved: 06.10.2026 Published: 22.10.2026 Updated: 22.10.2026

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

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U
CVSS Score: 6.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	High	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	OpenVPN
Product	OpenVPN 3 Core Library
Versions	Default: unaffected affected from 3.4 to 3.11.7 (incl.)

References

https://community.openvpn.net/Security%20Announcements/CVE-2026-106017

Problem Types

CWE-295 Improper certificate validation CWE