NULL pointer dereference in Wazuh
CVE-2026-56401
Wazuh wazuh-modulesd before 5.0.0-beta3 contains a null pointer dereference vulnerability in inventory_sync FlatBuffer DataValue handling. An enrolled agent can send a verifier-valid DataValue message omitting the optional id field, causin…
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Wazuh — versions 5.0.0-beta3, 5.0.0, 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Exploit, vendor-advisory, Mitigation, Vendor Advisory)
- disclosure@vulncheck.com (Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-56401?
- CVE-2026-56401 is a medium-severity vulnerability in Wazuh, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-07-08.
- How severe is CVE-2026-56401?
- Medium severity. CVSS v3 base score is 6.5 out of 10.