{"id":"CVE-2026-74045","title":"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","summary":"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 …","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","cwe":["CWE-122"],"vendor":"Wazuh","product":"wazuh-manager","affected":["wazuh-manager >= 3.12.0 < 4.14.8"],"published":"2026-10-13","updated":"2026-10-15","sourceUpdated":"2026-10-15T15:49:21.457","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74045","references":[{"url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.8","label":"disclosure@vulncheck.com"},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in-wazuh-analysisd-fim-decoder","label":"disclosure@vulncheck.com"},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00341,"epssPercentile":0.27426,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T13:47:37.998500Z"},"ingestedAt":"2026-10-13T14:29:01.863Z","slug":"CVE-2026-74045","body":"## Overview\n\nWazuh 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":220880,"id":"CVE-2026-74045","ts":1792026896357,"field":"exploit_available","old":"false","new":"true"}]}