CVE-2025-25566
SoftEther VPN Server vulnerability analysis and mitigation

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.


SourceNVD

Related SoftEther VPN Server vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-25568CRITICAL9.8
  • SoftEther VPN Server logoSoftEther VPN Server
  • cpe:2.3:a:softether:vpn
NoNoMar 12, 2025
CVE-2025-25567CRITICAL9.8
  • SoftEther VPN Server logoSoftEther VPN Server
  • cpe:2.3:a:softether:vpn
NoNoMar 12, 2025
CVE-2025-25565CRITICAL9.8
  • SoftEther VPN Server logoSoftEther VPN Server
  • cpe:2.3:a:softether:vpn
NoNoMar 12, 2025
CVE-2026-39312HIGH7.5
  • SoftEther VPN Server logoSoftEther VPN Server
  • cpe:2.3:a:softether:see.sys
NoNoApr 07, 2026
CVE-2025-25566MEDIUM5.6
  • SoftEther VPN Server logoSoftEther VPN Server
  • cpe:2.3:a:softether:vpn
NoNoMar 12, 2025

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