Vulnerability · Published Dec 15, 2025 · Assigned by VulnCheck
CVE-2025-34181NetSupport Manager < 14.12.0001 Authenticated Path Traversal Arbitrary File Write RCE
High 8.7
In plain English
A high-severity path traversal in Manager from NetSupport Software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NetSupport Software | Manager | 0 – before 14.12.0001 |
Weakness: CWE-22 · 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
References
- https://kb.netsupportsoftware.com/knowledge-base/updating-and-securing-netsupport-manager/ vendor-advisory, patch
- https://www.vulncheck.com/advisories/netsupport-manager-authenticated-path-traversal-arbitrary-write-rce third-party-advisory
- https://ret2.me/post/2025-12-04-exploiting-netsupport-gateway/ technical-description, exploit