CVE-2026-74040: critical vulnerability in wazuh-manager
Wazuh 3.9.0 before 4.14.8 Arbitrary File Overwrite RCE via process_files_from_worker
Published · Updated
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.4epss 0.6%
exploitation probability
0.6%top 55% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
Wazuh · wazuh-managerRelated CVEs — wazuh-manager
In the same product, most dangerous first.
CVE-2025-15616HIGHWazuh Agent and Manager OS Command Injection and Untrusted Search PathEPSS 1.6%CVE-2026-74044HIGHWazuh 4.0.0 < 4.14.6 Path Traversal Arbitrary Directory Deletion via Cluster HelloEPSS 0.6%CVE-2026-74046MEDIUMWazuh 4.4.0 < 4.14.7 DoS via fdecompress_files() Zip BombEPSS 0.6%CVE-2026-74039HIGHWazuh 4.0.0 < 4.14.7 API DoS via Deeply Nested JSON auth_contextEPSS 0.6%CVE-2026-74038HIGHWazuh 4.0.0 < 4.14.6 Path Traversal DoS via Agent EnrollmentEPSS 0.5%CVE-2026-32983MEDIUMSSL/TLS Renegotiation DoS in Wazuh Manager authd serviceEPSS 0.5%