CVE WatchOct 16, 2026

CVE-2026-74040

Wazuh versions from 3.9.0 before 4.14.8 contain an arbitrary file overwrite vulnerability in MasterHandler.process_files_from_worker allowin

CVSS

9.1

Critical

EPSS

0.6%

p45

KEV

—

Exploit Today

0-100

Published: Oct 13, 2026 · Last modified: Oct 16, 2026 · CWE-862

EPSS · 30d

0.6%EPSS · 30 days0.6%

2026-10-142026-10-22

Technical description

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.

Official references

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