# CVE-2024-5594: Information disclosure in OpenVPN

> A malicious OpenVPN server can inject arbitrary data into client logs, potentially exposing sensitive information to attackers.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Jan 2025
- **Updated:** 3 Nov 2025
- **Also known as:** ALPINE-CVE-2024-5594, CLSA-2025-1744710425, CLSA-2025-1744727573, DEBIAN-CVE-2024-5594, GHSA-f2h8-4w6p-535w, MGASA-2024-0255, OESA-2024-1885, SUSE-SU-2025:0278-1, SUSE-SU-2025:1053-1, SUSE-SU-2025:1053-2, SUSE-SU-2025:1131-1, UBUNTU-CVE-2024-5594, openSUSE-SU-2025:14707-1

## What is CVE-2024-5594?

CVE-2024-5594 is a critical vulnerability in OpenVPN, published on 6 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker controlling the server can use to inject unexpected arbitrary data ending up in client logs.

Weakness: CWE-1287 (Improper Validation of Specified Type of Input)

## Which versions are affected by CVE-2024-5594?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `openvpn` | SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 2.6.8-150600.3.14.1 |
| `openvpn-dco` | SUSE:Linux Enterprise Module for Basesystem 15 SP6 | All versions | 2.6.8-150600.3.14.1 |
| `openvpn` | SUSE:Linux Enterprise Server 12 SP5-LTSS | All versions | 2.3.8-16.35.1 |
| `openvpn` | SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 2.3.8-16.35.1 |
| `openvpn` | SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Manager Proxy 4.3 | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | SUSE:Manager Server 4.3 | All versions | 2.5.6-150400.3.9.1 |
| `openvpn` | openSUSE:Leap 15.6 | All versions | 2.6.8-150600.3.14.1 |
| `openvpn-dco` | openSUSE:Leap 15.6 | All versions | 2.6.8-150600.3.14.1 |
| `openvpn` | openSUSE:Tumbleweed | All versions | 2.6.10-5.1 |

Products: Openvpn Openvpn.

## How do I fix CVE-2024-5594?

Upgrade to a fixed version.

## Is CVE-2024-5594 being exploited?

There is no known exploitation of CVE-2024-5594 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-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)
- [CVE-2021-3606](https://insights.sbomify.com/CVE-2021-3606/): Code injection in OpenVPN-GUI (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-5594 and fix it if it is affected.

What it is: CVE-2024-5594 is a critical vulnerability in OpenVPN, published on 6 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-5594 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-2024-5594/ (Markdown: https://insights.sbomify.com/CVE-2024-5594/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-5594
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-5594
- OSV: https://osv.dev/vulnerability/CVE-2024-5594

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-5594/
Summaries are generated and may contain mistakes; the official description above is the record.