VulnerabilityModified

CVE-2025-25566

Memory Leak vulnerability in SoftEtherVPN 5.02.5187 allows an attacker to cause a denial of service via the UnixMemoryAlloc function.

MEDIUM 5.6EPSS 0.31%

Does this matter?

Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own.

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 3.1: 5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS: 0.31% probability · 24th percentile
CISA KEV: Not listed
Weakness: CWE-401
Affected: softether/vpn
Source: cve@mitre.org

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.