CVE-2026-34150

Wazuh is a free and open source platform used for threat prevention, detection, and response. In versions 1.0.0 and above, prior to 4.14.5, a heap buffer overflow in wazuh-analysisd allows an unauthenticated remote attacker to crash the Wazuh manager's analysis engine, causing complete loss of SIEM alert processing. The attack exploits the default configuration shipped in the official wazuh/wazuh-docker deployment with default configuration. An attacker can enroll with authd without a password to obtain a valid agent ID and encryption key, connect to remoted over the Wazuh agent protocol, and inject rootcheck events containing {key: value} patterns longer than 30 bytes that trigger a sprintf overflow of a 30-byte buffer in W_JSON_ParseRootcheck, corrupting the heap and crashing wazuh-analysisd so that all alert processing silently stops while the dashboard and API keep showing stale data.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/wazuh/wazuh/security/advisories/GHSA-rvr9-89q8-w883	Exploit Mitigation Vendor Advisory
https://github.com/wazuh/wazuh/security/advisories/GHSA-rvr9-89q8-w883	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*

History

20 Jul 2026, 13:36

Type	Values Removed	Values Added
First Time		Wazuh wazuh Wazuh
CPE		cpe:2.3:a:wazuh:wazuh::::::::
References	~~() https://github.com/wazuh/wazuh/security/advisories/GHSA-rvr9-89q8-w883 -~~	() https://github.com/wazuh/wazuh/security/advisories/GHSA-rvr9-89q8-w883 - Exploit, Mitigation, Vendor Advisory

17 Jul 2026, 11:17

Type	Values Removed	Values Added
References	~~() https://github.com/wazuh/wazuh/security/advisories/GHSA-rvr9-89q8-w883 -~~	() https://github.com/wazuh/wazuh/security/advisories/GHSA-rvr9-89q8-w883 -

17 Jul 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 00:16

Updated : 2026-07-20 13:36

NVD link : CVE-2026-34150

Mitre link : CVE-2026-34150

CVE.ORG link : CVE-2026-34150

JSON object : View

Products Affected

wazuh

wazuh

CWE

CWE-122

Heap-based Buffer Overflow

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