PT-2025-11105 · Softether · Softether Vpn

Drake C · Published 2025-03-12 · Updated 2025-07-19 · CVE-2025-25567

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: SoftEther VPN version 5.02.5187

Description: The issue is related to a Buffer Overflow in the Internat.c file via the UniToStrForSingleChars function.

Recommendations: For SoftEther VPN version 5.02.5187, consider disabling the UniToStrForSingleChars function as a temporary workaround until a patch is available. Restrict access to the Internat.c module to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2025-25567

Affected Products

Softether Vpn

References · 8

• 🔥 https://lzydry.github.io/CVE-2025-25567 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-25567 · Security Note
• https://osv.dev/vulnerability/CVE-2025-25567 · Vendor Advisory
• https://filecenter.softether-upload.com/d/250715_001_79538/CVE-2025-25567.pdf · Note
• https://twitter.com/CVEnew/status/1899894955025588602 · Twitter Post
• https://t.me/cvetracker/19002 · Telegram Post
• https://t.me/cvenotify/129523 · Telegram Post
• https://t.me/cvedetector/20158 · Telegram Post