CVE-2025-34181 NetSupport Manager < 14.12.0001 Authenticated Path Traversal Arbitrary File Write RCE
Authenticated attackers can exploit path traversal in the Connectivity Server to write arbitrary files, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34181?
CVE-2025-34181 is a high-severity path traversal vulnerability in NetSupport Software Manager, published on 15 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-22
Which versions are affected by CVE-2025-34181?
How do I fix CVE-2025-34181?
No fix has been published for CVE-2025-34181 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-34181 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34181 exists.
Sources
Also known as GHSA-w2fq-8jpx-5f27.