CVE-2025-62791 Wazuh vulnerable to NULL pointer dereference in DecodeCiscat
A compromised agent can crash the Wazuh manager's analysisd service by sending a crafted message, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-62791?
CVE-2025-62791 is a medium-severity vulnerability in Wazuh Wazuh, published on 29 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.11.0, DecodeCiscat() implementation does not check the return the value of cJSON_GetObjectItem() for a possible NULL value in case of an error. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can cause analysisd to crash and make it unavailable. This vulnerability is fixed in 4.11.0.
Which versions are affected by CVE-2025-62791?
It affects 1 product.
Products include Wazuh Wazuh.
How do I fix CVE-2025-62791?
No fix has been published for CVE-2025-62791 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-62791 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62791 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-gcwf-6p6m-gvm7.