Vulnerability · Published Oct 13, 2026 · Assigned by VulnCheck
CVE-2026-74045Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder
High 7.1
In plain English
A high-severity heap buffer overflow in wazuh-manager from Wazuh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.3%top 72.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wazuh | wazuh-manager | 3.12.0 – before 4.14.8 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
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