CVE-2025-25566 — MEDIUM (5.6)

Vulnerability 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.

CVSS Score

5.6

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Softether	Vpn	5.02.5187

Related Weaknesses (CWE)

CWE-401

References

FAQ

What is CVE-2025-25566?

CVE-2025-25566 is a vulnerability with a CVSS score of 5.6 (MEDIUM). 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 t...

How severe is CVE-2025-25566?

CVE-2025-25566 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-25566?

Check the references section above for vendor advisories and patch information. Affected products include: Softether Vpn.