High severity7.1NVD Advisory· Published Oct 13, 2026

CVE-2026-74045

Description

Wazuh from 3.12.0 before 4.14.8 contains a heap buffer overflow in fim_generate_alert() where full_log is sized from input but written bounded by OS_MAXSTR. An enrolled agent can send a crafted FIM syscheck event to corrupt manager heap memory and deterministically crash wazuh-analysisd, causing a fleet-wide detection outage.

Affected products

Wazuh/Wazuhllm-fuzzy
Range: <4.14.8

Patches

Vulnerability mechanics

References

github.com/wazuh/wazuh/releases/tag/v4.14.8nvd
github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfrnvd
www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in-wazuh-analysisd-fim-decodernvd

News mentions

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cvss	0.461
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000