# 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.

- **Severity:** High 8.7 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Dec 2025
- **Updated:** 14 May 2026
- **Also known as:** GHSA-w2fq-8jpx-5f27

## 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 (Improper Limitation of a Pathname to a Restricted Directory)

## 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.

## Is CVE-2025-34181 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34181 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34181 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34181 exists.

Affected product: NetSupport Software Manager. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-34181/ (Markdown: https://insights.sbomify.com/CVE-2025-34181/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34181
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34181
- OSV: https://osv.dev/vulnerability/CVE-2025-34181

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34181/
Summaries are generated and may contain mistakes; the official description above is the record.