CVE-2025-25566

MEDIUM

SoftEtherVPN 5.02.5187 - Denial of Service via UnixMemoryAlloc Memory Leak

Title source: llm

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.

References (2)

Core 2

Core References

Various Sources

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

Exploit

https://lzydry.github.io/CVE-2025-25566/

Scores

CVSS v3 5.6

EPSS 0.0029

EPSS Percentile 20.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (1)

softether/vpn 5.02.5187

Published Mar 12, 2025

Tracked Since Feb 18, 2026