CVE-2025-12420 Unauthenticated Privilege Escalation in ServiceNow AI Platform
Unauthenticated attackers can impersonate users and perform their operations in ServiceNow AI Platform, requiring immediate patching.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12420?
CVE-2025-12420 is a critical vulnerability in ServiceNow Now Assist AI Agents, published on 12 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in the ServiceNow AI Platform that could enable an unauthenticated user to impersonate another user and perform the operations that the impersonated user is entitled to perform.
ServiceNow has addressed this vulnerability by deploying a relevant security update to hosted instances in October 2025. Security updates have also been provided to ServiceNow self-hosted customers, partners, and hosted customers with unique configurations. Additionally, the vulnerability is addressed in the listed Store App versions. We recommend that customers promptly apply an appropriate security update or upgrade if they have not already done so.
Weakness: CWE-250
Which versions are affected by CVE-2025-12420?
It affects 2 products.
Products include Servicenow Now Assist Ai Agents, Servicenow Virtual Agent Api.
How do I fix CVE-2025-12420?
No fix has been published for CVE-2025-12420 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12420 being exploited?
There is no known exploitation of CVE-2025-12420 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as GHSA-mwg5-cwh8-88m5.