CVE-2026-84256

HIGH CVSS 4.0: 7.7 EPSS 0.38%
Updated Sep 07, 2026
Openvpn
Parameter Value
CVSS 7.7 (HIGH)
Type CWE-78 (OS Command Injection), CWE-88
Vendor Openvpn
Public PoC No

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0