Deserialization of Untrusted Data in Wazuh - CVE-2026-28220
Published: August 20, 2026
Vulnerability identifier: #VU144414
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28220
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data within the as_wazuh_object deserializer. A remote administrator can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Wazuh
How to mitigate CVE-2026-28220
Install updates from vendor's website.
Wazuh - update to 4.14.5