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CVE-2025-12420

Servicenow Now Assist Ai Agents privilege escalation

9.8 CRITICALEPSS 53.2%
  1. Published12 Jan 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Servicenow Now Assist Ai Agents≥ 5.2.0 < 5.2.19 · < 5.1.18
Servicenow Virtual Agent API≥ 4.0.0 < 4.0.4 · < 3.15.2

Remediation

Fixed in
Servicenow Now Assist Ai Agents≥ 5.2.19
Servicenow Virtual Agent API≥ 4.0.4

References

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Frequently asked

Is CVE-2025-12420 being actively exploited?

CVE-2025-12420 is not in the CISA KEV catalog. Its EPSS exploit probability is 53.2%.

How severe is CVE-2025-12420?

CVE-2025-12420 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 53.2% probability of exploitation.

Which products are affected by CVE-2025-12420?

Affected products include Servicenow Now Assist Ai Agents, Servicenow Virtual Agent API.

How do I fix CVE-2025-12420?

Upgrade affected software to a fixed version, for example Servicenow Now Assist Ai Agents 5.2.19, Servicenow Virtual Agent API 4.0.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-12420 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.