CVE-2026-11604: Openvpn Ovpn-Dco-Win

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption via a crafted data packet, resulting in a system crash (denial of service).

Affected products

• Openvpn Ovpn-Dco-Win: from 2.0.0, up to and including 2.8.3

Published 2026-06-10. Last modified 2026-09-24.