What is the CVSS score of CVE-2025-12420?

CVE-2025-12420 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of AI / ML are affected by CVE-2025-12420?

Organizations using A vulnerability face critical risk from CVE-2025-12420 rated CVSS 9.8.

How to fix or mitigate CVE-2025-12420?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.

AI / ML CVE-2025-12420

CRITICAL

Execution with Unnecessary Privileges (CWE-250)

2026-01-12 psirt@servicenow.com

Privilege Escalation AI / ML Virtual Agent Api Now Assist Ai Agents

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 12, 2026 - 22:16 nvd

CRITICAL 9.8

DescriptionCVE.org

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.

AnalysisAI

ServiceNow AI Platform has a user impersonation vulnerability allowing unauthenticated attackers to impersonate any user and perform their authorized actions. ServiceNow has deployed patches to hosted instances and self-hosted updates are available.

Technical ContextAI

Improper authentication in AI Platform APIs (CWE-250) allows an unauthenticated attacker to impersonate any platform user. Given ServiceNow's role in enterprise IT operations, this can mean access to incident data, change management, asset inventories, and HR records.