CVE-2023-25774: Softether VPN

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of SoftEther VPN 5.02. A set of specially crafted network connections can lead to denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

Affected products

• Softether VPN: version 5.02 only

Published 2023-10-12. Last modified 2026-06-17.