ZDI-26-528: Wazuh Cluster DAPI Protocol Deserialization of Untrusted Data Remote Code Execution Vulnerability
ZDI advisory ZDI-26-528 discloses CVE-2026-28220, a CVSS 9.9 deserialization RCE in Wazuh's cluster DAPI protocol exploitable by network-adjacent attackers.
Wazuh contains a deserialization-of-untrusted-data flaw in its cluster DAPI protocol, tracked as CVE-2026-28220 with CVSS 9.9. Network-adjacent attackers can execute arbitrary code on affected installations, but must first obtain the ability to execute low-privileged code on a worker node. The vulnerability was disclosed through ZDI advisory ZDI-26-528.