What’s Vulnerable › Vulnerabilities

CVE-2025-25566

• Severity: medium (CVSS 5.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-03-12 · updated 2026-06-17
• Weakness: CWE-401

Description

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

• SoftEther VPN: 5.02.5187

References

• https://filecenter.softether-upload.com/d/250715_001_79538/CVE-2025-25566.pdf
• https://lzydry.github.io/CVE-2025-25566/

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