{"id":"CVE-2026-74040","published":"2026-10-13T14:17:40Z","modified":"2026-10-16T22:17:55Z","title":"Wazuh versions from 3.9.0 before 4.14.8 contain an arbitrary file overwrite vulnerability in…","vendor":"Wazuh","product":"wazuh-manager","tier":"core","eol":null,"description":{"text":"Wazuh versions from 3.9.0 before 4.14.8 contain an arbitrary file overwrite vulnerability in MasterHandler.process_files_from_worker allowing a cluster worker to overwrite protected master files. Attackers controlling a worker can use a trailing-slash basename bypass and missing extra_valid enforcement to overwrite ossec.conf and agent.conf, achieving root remote code execution across the manager and every agent.","provenance":"source","from":"NVD"},"summary":{"text":"Wazuh versions from 3.9.0 before 4.14.8 contain an arbitrary file overwrite vulnerability in MasterHandler.process_files_from_worker that allows a cluster worker to overwrite protected master files, including ossec.conf and agent.conf, leading to root remote code execution across the manager and every agent. This affects Wazuh wazuh-manager deployments using the affected versions.","provenance":"ai","model":"deepseek-v4-flash","generatedAt":"2026-10-23T03:20:49Z"},"cvss":{"score":9.1,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.00716,"percentile":0.53796,"date":"2026-10-31","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":null,"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"references":[{"url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.8","tags":[]},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-88p6-7cm8-xwj8","tags":[]},{"url":"https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-arbitrary-file-overwrite-rce-via-process-files-from-worker","tags":[]},{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-88p6-7cm8-xwj8","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-98676","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98676","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-10-13","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74040","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":17.1,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":10.76,"detail":"percentile 0.5380"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":6.37,"detail":"base score 9.1"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}