CVE-2026-84256

State: Published
Severity: 7.7 High
Published: Sep 7, 2026
Updated: Oct 13, 2026
Reserved: Sep 1, 2026

Description

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.7 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	OpenVPN

Weaknesses

CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection')
CWE-88 Improper neutralization of argument delimiters in a command ('argument injection')

Affected Products

Product	Versions
OpenVPNOpenVPN	2.1_rc10 through 2.6.22Affected 2.7_alpha1 through 2.7.7Affected

References

https://community.openvpn.net/Security%20Announcements/CVE-2026-84256vendor-advisory

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