CVE-2025-34181
HIGH EPSS 54.3%
Published Dec 15, 20256mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
Published Dec 15, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
54.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-22 Path Traversal Resource Mgmt
References 3
- kb.netsupportsoftware.com https://kb.netsupportsoftware.com/knowledge-base/updating-and-securing-netsupport-manager/
- ret2.me https://ret2.me/post/2025-12-04-exploiting-netsupport-gateway/
- vulncheck.com https://www.vulncheck.com/advisories/netsupport-manager-authenticated-path-traversal-arbitrary-write-rce
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.