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.

CVSS 4.0

7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-25)

CWE

CWE-122

Published

2026-10-13

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

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

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