CVE-2025-25565 — CRITICAL (9.8)

Vulnerability Description

SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in the Command.c file via the PtMakeCert and PtMakeCert2048 functions. NOTE: the Supplier disputes this because the behavior only allows a user to attack himself by typing a long string on a command line.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Softether	Vpn	5.02.5187

Related Weaknesses (CWE)

CWE-120

References

FAQ

What is CVE-2025-25565?

CVE-2025-25565 is a vulnerability with a CVSS score of 9.8 (CRITICAL). SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in the Command.c file via the PtMakeCert and PtMakeCert2048 functions. NOTE: the Supplier disputes this because the behavior only allows a user...

How severe is CVE-2025-25565?

CVE-2025-25565 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-25565?

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