# CVE-2025-34118: Linknat VOS Manager Path Traversal File Disclosure

> Unauthenticated attackers can read arbitrary files on Linknat VOS Manager servers via path traversal in localized subpaths.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jul 2025
- **Updated:** 15 May 2026
- **Also known as:** GHSA-xwwh-cr5m-xwxm

## What is CVE-2025-34118?

CVE-2025-34118 is a high-severity path traversal vulnerability in Linknat Technology VOS Manager, published on 16 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A path traversal vulnerability exists in Linknat VOS Manager versions prior to 2.1.9.07, including VOS2009 and early VOS3000 builds, that allows unauthenticated remote attackers to read arbitrary files on the server. The vulnerability is accessible via multiple localized subpaths such as '/eng/', '/chs/', or '/cht/', where the 'js/lang_en_us.js' or equivalent files are loaded. By injecting encoded traversal sequences such as '%c0%ae%c0%ae' into the request path, attackers can bypass input validation and disclose sensitive files.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-34118?


## How do I fix CVE-2025-34118?

No fix has been published for CVE-2025-34118 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34118 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34118 exists.

Public exploit code:

- Linknat Vos Manager Traversal (metasploit)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34118 and fix it if it is affected.

What it is: CVE-2025-34118 is a high-severity path traversal vulnerability in Linknat Technology VOS Manager, published on 16 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34118 exists.

Affected product: Linknat Technology VOS 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-2025-34118/ (Markdown: https://insights.sbomify.com/CVE-2025-34118/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34118
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34118
- OSV: https://osv.dev/vulnerability/CVE-2025-34118

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34118/
Summaries are generated and may contain mistakes; the official description above is the record.