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.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
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
Which versions are affected by CVE-2025-39664?
It affects 1 product.
Products include 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.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
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 omd: Local privilege escalation when executing omd commands as root
- CVE-2024-8606 Fix 2FA bypass via RestAPI
- CVE-2022-46836 PHP code injection in watolib
- CVE-2025-32919 Privilege Escalation in Windows License plugin for Checkmk Windows Agent
- CVE-2024-28827 Privilege escalation in Windows agent
Sources
Also known as GHSA-wm22-3ghp-687p, UBUNTU-CVE-2025-39664.