Vulnerability details
CVE-2026-74040
wazuh wazuh-manager
Wazuh 3.9.0 before 4.14.8 Arbitrary File Overwrite RCE via process_files_from_worker
CVSS 4.0
9.4Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.4Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 9.1Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| wazuh | wazuh-manager | 3.9.0 ≤ v < 4.14.8 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/wazuh/wazuh/releases/tag/v4.14.8 patchrelease-notes
- https://www.vulncheck.com/advisories/wazuh-3.9.0-before-4.14.8-arbitrary-file-overwrite-rce-via-process-files-from-worker third-party-advisory
- https://github.com/wazuh/wazuh/security/advisories/GHSA-88p6-7cm8-xwj8 vendor-advisory
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Details
- Published
- 2026-10-13
- Last updated
- 2026-10-26
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 28 · Low
Exploit prediction (EPSS)
0.71%
Probability of exploitation in 30 days
53.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-862Missing Authorization