#VU122532 Authentication bypass by primary weakness in FortiOS - CVE-2026-22153

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Main Vulnerability Database Vulnerabilities #VU122532

#VU122532 Authentication bypass by primary weakness in FortiOS - CVE-2026-22153

Published: February 10, 2026


Vulnerability identifier: #VU122532
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-22153
CWE-ID: CWE-305
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
FortiOS
Software vendor:
Fortinet, Inc

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in fnbamd. A remote non-authenticated attacker can bypass LDAP authentication in Agentless VPN and FSSO and gain unauthorized access to the network. 


Remediation

Install updates from vendor's website.

External links