# CVE-2025-39664: Path-Traversal in report scheduler

> Authenticated attackers can exploit insufficient escaping in the report scheduler to access or modify files outside the intended directory.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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:** 9 Oct 2025
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-wm22-3ghp-687p, UBUNTU-CVE-2025-39664

## What is CVE-2025-39664?

CVE-2025-39664 is a high-severity path traversal vulnerability in Checkmk Checkmk, published on 9 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Insufficient escaping in the report scheduler within Checkmk <2.4.0p13, <2.3.0p38, <2.2.0p46 and 2.1.0 (EOL) allows authenticated attackers to define the storage location of report file pairs beyond their intended root directory.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-39664?

It affects 1 product.


Products: Checkmk Checkmk.

## How do I fix CVE-2025-39664?

No fix has been published for CVE-2025-39664 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-39664 being exploited?

There is no known exploitation of CVE-2025-39664 in the wild and no public exploit code.

## Other vulnerabilities in Checkmk Checkmk

- [CVE-2025-39666](https://insights.sbomify.com/CVE-2025-39666/): omd: Local privilege escalation when executing omd commands as root (critical 9.3)
- [CVE-2024-8606](https://insights.sbomify.com/CVE-2024-8606/): Fix 2FA bypass via RestAPI (critical 9.2)
- [CVE-2022-46836](https://insights.sbomify.com/CVE-2022-46836/): PHP code injection in watolib (critical 9.1)
- [CVE-2025-32919](https://insights.sbomify.com/CVE-2025-32919/): Privilege Escalation in Windows License plugin for Checkmk Windows Agent (high 8.8)
- [CVE-2024-28827](https://insights.sbomify.com/CVE-2024-28827/): Privilege escalation in Windows agent (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-39664 and fix it if it is affected.

What it is: CVE-2025-39664 is a high-severity path traversal vulnerability in Checkmk Checkmk, published on 9 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-39664 in the wild and no public exploit code.

Affected product: Checkmk Checkmk. 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-2025-39664/ (Markdown: https://insights.sbomify.com/CVE-2025-39664/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-39664
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-39664
- OSV: https://osv.dev/vulnerability/CVE-2025-39664

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-39664/
Summaries are generated and may contain mistakes; the official description above is the record.