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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wazuh | wazuh-manager | 3.12.0 – < 4.14.8 | 4.14.8 |
Advisories 1
- WID-SEC-2026-3878 Wazuh: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 13, 2026
References
- GitHub Security Advisory (GHSA-gc4j-j9fg-4cfr) vendor-advisory
- Wazuh v4.14.8 Release Notes patch release-notes
- VulnCheck Advisory: Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder third-party-advisory