Buffer overflow in Wazuh Wazuh-Manager
CVE-2026-74045
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.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr (vendor-advisory)
- github.com/wazuh/wazuh/releases/tag/v4.14.8 (release-notes, patch)
- www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-74045?
- CVE-2026-74045 is a high-severity vulnerability in Wazuh Wazuh-Manager, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2026-10-13.
- How severe is CVE-2026-74045?
- High severity. CVSS v3 base score is 7.1 out of 10.