CVE-2026-56401 PUBLISHED

Wazuh - NULL Pointer Dereference in inventory_sync DataValue FlatBuffer Handling

Assigner: VulnCheck
Reserved: 21.06.2026 Published: 08.07.2026 Updated: 08.07.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Wazuh
Product	Wazuh
Versions	Default: unaffected affected from 0 to 5.0.0-beta3 (excl.) Version 5.0.0-beta3 is unaffected

CVE-2026-56401 PUBLISHED

Wazuh - NULL Pointer Dereference in inventory_sync DataValue FlatBuffer Handling

Metrics

Product Status

Credits

References

Problem Types