High severity · published Oct 13, 2026
CVE-2026-74035
Wazuh 4.6.0 before 4.14.8 Authentication Bypass via Empty Password in update_user
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
Wazuh versions from 4.6.0 before 4.14.8 contain an authentication bypass vulnerability where security.update_user places the reserved user guard and password policy inside a falsy truthiness check. A delegated user administrator can send an empty password to the user update endpoint, bypassing the reserved user guard to take over the wazuh superuser account and authenticate with empty credentials.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
wazuh-manager · Wazuh
4.6.0 before 4.14.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74035
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74035
vendor-advisory
https://github.com/wazuh/wazuh/security/advisories/GHSA-27gv-q7q6-f5qh
patch
https://github.com/wazuh/wazuh/releases/tag/v4.14.8
third-party-advisory
https://www.vulncheck.com/advisories/wazuh-4.6.0-before-4.14.8-authentication-bypass-via-empty-password-in-update-user
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