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.

References

• https://github.com/wazuh/wazuh/releases/tag/v4.14.8
• https://github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr
• https://www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in-wazuh-analysisd-fim-decoder
• https://github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr