Wazuh 3.9.0 before 4.14.8 Arbitrary File Overwrite RCE via process_files_from_worker
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.
CVE-2026-74040
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74040
wazuh-manager
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/wazuh/wazuh",
"vendor": "Wazuh",
"product": "wazuh-manager",
"versions": [
{
"status": "affected",
"version": "3.9.0",
"lessThan": "4.14.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.14.8",
"versionType": "semver"
}
],
"packageURL": "pkg:github/wazuh/wazuh",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-74040
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #34473 · Revision 1
- Added to Heist Feed
- Publisher date