CVE-2025-64169 Wazuh NULL pointer dereference in fim_alert line 666
A compromised agent can crash the Wazuh manager by sending a crafted message, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64169?
CVE-2025-64169 is a medium-severity vulnerability in Wazuh Wazuh, published on 21 Nov 2025. An attacker needs administrator access to exploit it, with no action from the victim.
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.
Which versions are affected by CVE-2025-64169?
It affects 1 product.
Products include Wazuh Wazuh.
How do I fix CVE-2025-64169?
No fix has been published for CVE-2025-64169 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-64169 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-64169 exists.
Other vulnerabilities in Wazuh Wazuh
- CVE-2025-24016 Wazuh Server Deserialization of Untrusted Data
- CVE-2024-32038 Wazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution Vulnerability
- CVE-2021-44079 Command injection in n/a
- CVE-2024-1243 Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft
- CVE-2026-61800 Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893)
Sources
Also known as GHSA-hc35-h924-8596.