CVE-2025-12420
CRITICALEPSS 99th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 99% of all known CVEs.
References
Related Vulnerabilities
Other CWE-250 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-1222 | High | 8.6 | 64% | - | Fix |
| CVE-2024-38813 | High | 7.5 | 17% | KEV | Fix |
| CVE-2025-34515 | Critical | 9.8 | 7.4% | - | - |
| CVE-2026-29205 | High | 8.6 | 7.2% | - | - |
| CVE-2019-16765 | High | 7.4 | 4.7% | - | Fix |
| CVE-2022-1808 | High | 8.8 | 3.4% | - | Fix |
Common questions
How do I fix CVE-2025-12420?
Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2025-12420 being actively exploited?
Not that we know of. CVE-2025-12420 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 45.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 99% of all scored CVEs.
How severe is CVE-2025-12420?
CVE-2025-12420 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-12420 affect?
Published advisories record a fix for now assist ai agents (NVD), virtual agent api (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-27.