{"id":"CVE-2026-74045","aliases":["EUVD-2026-98679","GHSA-gc4j-j9fg-4cfr"],"status":"published","title":"Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder","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.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00341,"percentile":0.27928,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-10-13T13:27:32Z","modified":"2026-10-28T02:30:59Z","products":[{"vendor":"wazuh","product":"wazuh-manager"}],"references":[{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-gc4j-j9fg-4cfr","tags":["vendor-advisory","exploit","advisory"]},{"url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.8","tags":["patch","release-notes","fix"]},{"url":"https://www.vulncheck.com/advisories/wazuh-3.12.0-before-4.14.8-heap-buffer-overflow-in-wazuh-analysisd-fim-decoder","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74045.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74045","tags":["advisory"]},{"url":"https://github.com/wazuh/wazuh","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-74045","title":"Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder","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.","status":"published","published":"2026-10-13T13:27:32.515Z","modified":"2026-10-26T14:15:49.46Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:20:03.081354Z"}],"euvd":[{"id":"EUVD-2026-98679","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.","status":"published","published":"2026-10-13T13:27:32Z","modified":"2026-10-26T14:15:49Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:59:29.915597Z"}],"nvd":[{"id":"CVE-2026-74045","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.","status":"published","published":"2026-10-13T14:17:41.16Z","modified":"2026-10-15T15:49:21.457Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:57.132005Z"}],"osv":[{"id":"CVE-2026-74045","title":"Wazuh 3.12.0 before 4.14.8 Heap Buffer Overflow in wazuh-analysisd FIM Decoder","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.","status":"published","published":"2026-10-13T13:27:32.515Z","modified":"2026-10-28T02:30:59.308098428Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:45:16.365946Z"}]}}