What’s Vulnerable › Vulnerabilities
CVE-2025-64169: Wazuh NULL pointer dereference in fim_alert line 666
- Severity: medium (CVSS 4.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2025-11-21 · updated 2026-10-19
- Weakness: CWE-252
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
- wazuh: from 3.7.0 before 4.12.0 — fixed in 4.12.0
How to fix
Upgrade to a fixed version: wazuh 4.12.0. Check the vendor advisory for mitigations.
References
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