Impersonation flaw in widely-used ServiceNow AI Platform; unauthenticated access enabling broad user actions could disrupt IT operations across industries.
CVE-2025-12420
Unauthenticated impersonation in ServiceNow AI Platform.
Is CVE-2025-12420 being exploited?
Not confirmed. CVE-2025-12420 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 49% probability of exploitation in the next 30 days.
How severe is CVE-2025-12420?
CVE-2025-12420 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-12420?
Yes. A fix has been recorded for CVE-2025-12420. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-12420 affect?
CVE-2025-12420 affects ServiceNow AI Platform (hosted SaaS and self-hosted), Store App versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-12420?
Apply the ServiceNow security update or upgrade to patched release.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Impersonation allows unauthenticated access to perform actions as the impersonated user, risking data exposure and workflow abuse.
Immediate action required
- affected>= 5.0.26 and <= 5.1.17
- affected>= 5.0.26 and <= 5.2.18
- affected< 3.15.2
- affected< 4.0.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.