CVE-2025-12420

Published Jan 12, 2026

Last updated a month ago

CVSS critical 9.3

ServiceNow AI

Overview

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.
Source: psirt@servicenow.com
NVD status: Analyzed
Products: now_assist_ai_agents, virtual_agent_api

Risk scores

CVSS 4.0

Type: Secondary
Base score: 9.3
Impact score: -
Exploitability score: -
Vector string: 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:H/U:Amber
Severity: CRITICAL

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

psirt@servicenow.com: CWE-250

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:servicenow:now_assist_ai_agents:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "981D4C38-EC4B-42F1-96D2-83B02403ABD2",
            "versionEndExcluding": "5.1.18",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:servicenow:now_assist_ai_agents:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "160208ED-E032-4B34-BC89-0AC7B2C0808A",
            "versionEndExcluding": "5.2.19",
            "versionStartIncluding": "5.2.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:servicenow:virtual_agent_api:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "B619348E-A16D-4A69-9CB6-58A2FFC0BAED",
            "versionEndExcluding": "3.15.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:servicenow:virtual_agent_api:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "0F8C6775-D097-491A-9246-0C691EB680E3",
            "versionEndExcluding": "4.0.4",
            "versionStartIncluding": "4.0.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 4.0

CVSS 3.1

Weaknesses

Social media

Configurations

References