CVE-2025-24016
Wazuh Server Deserialization of Untrusted Data Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 1 July 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.9.1, an unsafe deserialization vulnerability allows for remote code execution on Wazuh servers. DistributedAPI parameters are a serialized as JSON and deserialized using `as_wazuh_object` (in `framework/wazuh/core/cluster/common.py`). If an attacker manages to inject an unsanitized dictionary in DAPI request/response, they can forge an unhandled exception (`__unhandled_exc__`) to evaluate arbitrary python code. The vulnerability can be triggered by anybody with API access (compromised dashboard or Wazuh servers in the cluster) or, in certain configurations, even by a compromised agent. Version 4.9.1 contains a fix.
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
- EPSS
- 93.84% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 10 June 2025 · due 1 July 2025
- Weakness
- CWE-502
- Affected
- wazuh/wazuh
- Source
- security-advisories@github.com
EPSS 93.8% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://wazuh.com/blog/addressing-the-cve-2025-24016-vulnerability/ ; https://github.com/wazuh/wazuh/security/advisories/GHSA-hcrc-79hj-m3qh ; https://nvd.nist.gov/vuln/detail/CVE-2025-24016
References
- https://github.com/wazuh/wazuh/security/advisories/GHSA-hcrc-79hj-m3qhExploit, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24016US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.