High severity · published Oct 13, 2026
CVE-2026-74045
Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder
7.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
wazuh-manager · Wazuh
3.12.0 before 4.14.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74045
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74045
vendor-advisory
https://github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr
patch
https://github.com/wazuh/wazuh/releases/tag/v4.14.8
third-party-advisory
https://www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in-wazuh-analysisd-fim-decoder
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