CVE-2026-105390: ovpn-dco-win 0.6.5 through 1.3.5, 2.4.0 through 2.8.7

Affected technology

ovpn-dco-win · 0.6.5 through 1.3.5, 2.4.0 through 2.8.7
OpenVPN

Description’s affected range: versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · No privileges required · No user interaction required

What an attacker can do

Local attackers can trigger a deadlock via a crafted write to the ovpn-dco device, causing the host to become unresponsive. Vendor/CNA’s CVSS 4.0 assessment (base score 6.9/10) rates confidentiality and integrity impact as none; availability impact as high.