CVE-2025-34181 HIGH

CVE-2025-34181: NetSupport Manager < 14.12.0001 Authenticated Path Traversal Arbitrary File Write RCE

Vendor Netsupport Software
Product Manager
Weakness CWE-22 · Path traversal
Published December 15, 2025
Last update May 14, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

NetSupport Manager < 14.12.0001 contains an arbitrary file write vulnerability in its Connectivity Server/Gateway PUTFILE request handler. An attacker with a valid Gateway Key can supply a crafted filename containing directory traversal sequences to write files to arbitrary locations on the server. This can be leveraged to place attacker-controlled DLLs or executables in privileged paths and achieve remote code execution in the context of the NetSupport Manager connectivity service.

Key dates

02Disclosure timeline

December 15, 2025 CVE published
May 14, 2026 Record updated