CVE-2026-74040 (GCVE-0-2026-74040)

Vulnerability from cvelistv5 – Published: 2026-10-13 13:27 – Updated: 2026-10-13 13:27
VLAI
Title
Wazuh 3.9.0 before 4.14.8 Arbitrary File Overwrite RCE via process_files_from_worker
Summary
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.
Severity
9.4 (Critical)
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
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5953 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Wazuh wazuh-manager Affected: 3.9.0 , < 4.14.8 (semver)
Unaffected: 4.14.8 (semver)
    cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-13 00:00
Credits
TarPeg007 vikman90
Show details on NVD website
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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