CVE-2026-105390

Published Oct 13, 2026 CWE-413 CWE-833

Description

Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to trigger a deadlock via a crafted write to the ovpn-dco device, causing the host to become unresponsive.

Is your site exposed to CVE-2026-105390?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-413 CWE-413
CWE-833 CWE-833

References

Frequently Asked Questions

What is CVE-2026-105390? +
Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to trigger a deadlock via a crafted write to the ovpn-dco device, causing the host to become unresponsive.
How do I check if I'm vulnerable to CVE-2026-105390? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2026-105390 — free, no signup required.