NULL pointer dereference in Wazuh

CVE-2025-64169

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-64169: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

  • Wazuh — versions >= 3.7.0, < 4.12.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-64169?
CVE-2025-64169 is a medium-severity vulnerability in Wazuh, classified under CWE-252. CVSS score: 4.9/10. Published 2025-11-21.
How severe is CVE-2025-64169?
Medium severity. CVSS v3 base score is 4.9 out of 10.