Vulnerability · Published Nov 21, 2025 · Assigned by GitHub_M

CVE-2025-64169Wazuh NULL pointer dereference in fim_alert line 666

Medium 5.1

In plain English

A medium-severity null pointer dereference in wazuh from wazuh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.4%top 67.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 3.7.0 to before 4.12.0, fim_alert() implementation does not check whether oldsum->md5 is NULL or not before dereferencing it. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. This issue has been patched in version 4.12.0.

Affected products (as reported)

Vendor	Product	Versions
wazuh	wazuh	>= 3.7.0, < 4.12.0

Weakness: CWE-252, CWE-476 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References

https://github.com/wazuh/wazuh/security/advisories/GHSA-hc35-h924-8596 x_refsource_CONFIRM