Is CVE-2025-25565 actively exploited?

No active exploitation of CVE-2025-25565 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-25565 be exploited remotely?

Yes. CVE-2025-25565 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-25565?

CVE-2025-25565 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2025-25565

CRITICAL

CVE-2025-25565

CWE-120Published: March 12, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-25565 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.