ServiceNow AI Platform: Improper Isolation or Compartmentalization
CVE-2026-0542 is a critical-severity improper isolation or compartmentalization vulnerability in ServiceNow AI Platform from ServiceNow, with a CVSS 4.0 base score of 9.2 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions Australia, Zurich Patch 5, Zurich Patch 4 Hot Fix 3b as the first without the flaw, so updating ServiceNow AI Platform to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.66% chance of exploitation within 30 days, higher than 52% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update ServiceNow AI Platform to Australia or Zurich Patch 5 or Zurich Patch 4 Hot Fix 3b or Yokohama Patch 12, whichever matches your release line, or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| ServiceNow | ServiceNow AI Platform | before Australia; before Zurich Patch 5; before Zurich Patch 4 Hot Fix 3b; before Yokohama Patch 12; before Yokohama Patch 10 Hot Fix 1b; before Xanadu Patch 11 Hot Fix 1a | Australia, Zurich Patch 5, Zurich Patch 4 Hot Fix 3b, Yokohama Patch 12, Yokohama Patch 10 Hot Fix 1b, Xanadu Patch 11 Hot Fix 1a |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- HighSerious loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- HighSerious loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- HighSerious loss of availability on the vulnerable system.
- Confidentiality (other systems)
- NoneNo loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- NoneNo loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- NoneNo loss of availability on systems beyond the vulnerable one.
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X. Scored by CNA (servicenow.com).
Official description
ServiceNow has addressed a remote code execution vulnerability that was identified in the ServiceNow AI platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to execute code within the ServiceNow Sandbox. ServiceNow addressed this vulnerability by deploying a security update to hosted instances. Relevant security updates also have been provided to ServiceNow self-hosted customers and partners. Further, the vulnerability is addressed in the listed patches and hot fixes. While we are not currently aware of exploitation against customer instances, we recommend customers promptly apply appropriate updates or upgrade if they have not already done so.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Isolation or Compartmentalization
The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.
How developers prevent this class of flaw
- Break up privileges between different modules, objects, or entities. Minimize the interfaces between modules and require strong access control between them.
More Improper Isolation or Compartmentalization vulnerabilities (CWE-653)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in ServiceNow AI Platform
- 7.1 High severity
- 9.4 Critical severity
- 9.3 Critical severity
- 8.7 High severity
- 8.7 High severity
- 8.4 High severity
Recent Improper Isolation or Compartmentalization vulnerabilities
- 7.5 High severity
- 7.2 High severity
- 7.8 High severity
- 7.8 High severity
- 8.8 High severity
- 7.8 High severity
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