Vulnerability in wazuh-manager

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund12 Oct 2026WID-SEC-2026-3878

  Wazuh: Multiple vulnerabilities Translated from German

  CVE-2026-74034CVE-2026-74045CVE-2026-74035+12 more CVEs

[ References ]References

• github.com/wazuh/wazuh/releases/tag/v4.14.8
• github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr
• www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in-wazuh-a…