CVE-2025-12420 PUBLISHED

Unauthenticated Privilege Escalation in ServiceNow AI Platform

Assigner: SN
Reserved: 28.10.2025 Published: 12.01.2026 Updated: 26.02.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/S:N/AU:Y/R:U/V:C/RE:H/U:Amber
CVSS Score: 9.3

Product Status

Vendor ServiceNow
Product Now Assist AI Agents
Versions Default: unaffected
  • affected from 5.0.26 to 5.1.17 (incl.)
  • affected from 5.0.26 to 5.2.18 (incl.)
Vendor ServiceNow
Product Virtual Agent API
Versions Default: unaffected
  • affected from 0 to 3.15.2 (excl.)
  • affected from 0 to 4.0.4 (excl.)

Credits

  • Aaron Costello – AppOmni finder

References

Problem Types

  • CWE-250: Execution with Unnecessary Privileges CWE