Medium severity · published Nov 18, 2025
CVE-2025-64996
Overly broad file permissions in the mk_inotify plugin allows reading and manipulating the plugin's output
4.4
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
Checkmk · Checkmk GmbH
2.4.0 before 2.4.0p16; 2.3.0 before 2.3.0p41; 2.2.0; 2.1.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64996
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64996
Mitigation
https://checkmk.com/werk/18570
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