CVE-2025-64996 Overly broad file permissions in the mk_inotify plugin allows reading and manipulating the plugin's output
Local attackers can read and modify monitoring data due to overly broad file permissions in the mk_inotify plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64996?
CVE-2025-64996 is a medium-severity vulnerability in Checkmk Checkmk, published on 18 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Checkmk versions prior to 2.4.0p16, 2.3.0p41, and all versions of 2.2.0 and older, the mk_inotify plugin creates world-readable and writable files, allowing any local user on the system to read the plugin's output and manipulate it, potentially leading to unauthorized access to or modification of monitoring data.
Weakness: CWE-732
Which versions are affected by CVE-2025-64996?
It affects 1 product.
Products include Checkmk Checkmk.
How do I fix CVE-2025-64996?
No fix has been published for CVE-2025-64996 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-64996 being exploited?
There is no known exploitation of CVE-2025-64996 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-g5vj-46wr-fpx5, UBUNTU-CVE-2025-64996.