CVE-2026-56401

MEDIUM

Wazuh - NULL Pointer Dereference in inventory_sync DataValue FlatBuffer Handling

Title source: cna
STIX 2.1

Description

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, causing wazuh-modulesd to crash when dereferencing data->id()->string_view() without null validation, resulting in denial of service.

References (3)

Core 3
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-6hxp-c9x3-qc7p)
https://github.com/wazuh/wazuh/security/advisories/GHSA-6hxp-c9x3-qc7p
Third Party Advisory third-party-advisory
VulnCheck Advisory: Wazuh - NULL Pointer Dereference in inventory_sync DataValue FlatBuffer Handling
https://www.vulncheck.com/advisories/wazuh-null-pointer-dereference-in-inventory-sync-datavalue-flatbuffer-handling

Scores

CVSS v3 6.5
EPSS 0.0032
EPSS Percentile 24.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-476
Status published
Products (4)
wazuh/wazuh 5.0.0 alpha0 (3 CPE variants)
wazuh/wazuh < 5.0.0
Wazuh/Wazuh < 5.0.0-beta3
Wazuh/Wazuh 5.0.0-beta3
Published Jul 08, 2026
Tracked Since Jul 08, 2026