# CVE-2025-4539: Hainan ToDesk DLL File Parser profapi.dll uncontrolled search path

> Local attackers can exploit an uncontrolled search path in ToDesk's DLL parser to execute arbitrary code, requiring high complexity and local access.

- **Severity:** High 7.3 (`CVSS:4.0/AV:L/AC:H/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 May 2025
- **Updated:** 12 May 2025
- **Also known as:** GHSA-7q2c-3wqx-c54w

## What is CVE-2025-4539?

CVE-2025-4539 is a high-severity vulnerability in Hainan ToDesk, published on 11 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability was found in Hainan ToDesk 4.7.6.3. It has been declared as critical. This vulnerability affects unknown code in the library profapi.dll of the component DLL File Parser. The manipulation leads to uncontrolled search path. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-427 (Uncontrolled Search Path Element), CWE-426 (Untrusted Search Path)

## Which versions are affected by CVE-2025-4539?

It affects 1 product.


Products: Todesk Todesk.

## How do I fix CVE-2025-4539?

No fix has been published for CVE-2025-4539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-4539 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4539 exists.

## Other vulnerabilities in Hainan ToDesk

- [CVE-2024-44542](https://insights.sbomify.com/CVE-2024-44542/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-4539 and fix it if it is affected.

What it is: CVE-2025-4539 is a high-severity vulnerability in Hainan ToDesk, published on 11 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4539 exists.

Affected product: Hainan ToDesk. 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-2025-4539/ (Markdown: https://insights.sbomify.com/CVE-2025-4539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-4539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-4539
- OSV: https://osv.dev/vulnerability/CVE-2025-4539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-4539/
Summaries are generated and may contain mistakes; the official description above is the record.