CVE-2025-25566: Softether VPN

Medium severity, CVSS 5.6. EPSS: 0.3% chance of exploitation in the next 30 days.

Memory Leak vulnerability in SoftEtherVPN 5.02.5187 allows an attacker to cause a denial of service via the UnixMemoryAlloc function. NOTE: the Supplier disputes this because the behavior is limited to a single allocation of a few hundred bytes with a command-line tool.

Affected products

Published 2025-03-12. Last modified 2026-06-17.