# CVE-2025-13751: Denial of service in OpenVPN

> A local authenticated user can trigger an error in the OpenVPN Windows service agent, causing a local denial of service.

- **Severity:** Low 1.3 (`CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Clear`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 3 Dec 2025
- **Updated:** 12 Dec 2025
- **Also known as:** GHSA-74jr-8vhj-2c3f

## What is CVE-2025-13751?

CVE-2025-13751 is a low-severity denial of service vulnerability in OpenVPN, published on 3 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Interactive service agent in OpenVPN version 2.5.0 through 2.6.16 and 2.7_alpha1 through 2.7_rc2 on Windows allows a local authenticated user to connect to the service and trigger an error causing a local denial of service.

Weakness: CWE-841 (Improper Enforcement of Behavioral Workflow), CWE-775 (Missing Release of File Descriptor or Handle after Effective Lifetime), CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2025-13751?

It affects 1 product.


Products: Openvpn Openvpn.

## How do I fix CVE-2025-13751?

No fix has been published for CVE-2025-13751 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13751 being exploited?

There is no known exploitation of CVE-2025-13751 in the wild and no public exploit code.

## Other vulnerabilities in OpenVPN

- [CVE-2025-12106](https://insights.sbomify.com/CVE-2025-12106/): Memory corruption in OpenVPN (critical 9.1)
- [CVE-2024-5594](https://insights.sbomify.com/CVE-2024-5594/): Information disclosure in OpenVPN (critical 9.1)
- [CVE-2018-7544](https://insights.sbomify.com/CVE-2018-7544/): Cross-site request forgery in n/a (critical 9.1)
- [CVE-2006-1629](https://insights.sbomify.com/CVE-2006-1629/): Code injection in n/a (critical 9.0)
- [CVE-2024-4877](https://insights.sbomify.com/CVE-2024-4877/): Privilege escalation in OpenVPN (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13751 and fix it if it is affected.

What it is: CVE-2025-13751 is a low-severity denial of service vulnerability in OpenVPN, published on 3 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-13751 in the wild and no public exploit code.

Affected product: OpenVPN. 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-2025-13751/ (Markdown: https://insights.sbomify.com/CVE-2025-13751/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13751
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13751
- OSV: https://osv.dev/vulnerability/CVE-2025-13751

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-13751/
Summaries are generated and may contain mistakes; the official description above is the record.