#VU121325 Improper authentication in Now Assist AI Agents and Virtual Agent API - CVE-2025-12420

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Main Vulnerability Database Vulnerabilities #VU121325

#VU121325 Improper authentication in Now Assist AI Agents and Virtual Agent API - CVE-2025-12420

Published: January 13, 2026


Vulnerability identifier: #VU121325
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-12420
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Now Assist AI Agents
Virtual Agent API
Software vendor:
ServiceNow

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the authentication requests. A remote non-authenticated attacker can impersonate any platform user and gain unauthorized access to the application with privileges of the impersonated user.


Remediation

Install updates from vendor's website.

External links