Security readout for executives and security teams
Plain-English summary
ServiceNow fixed a critical remote code execution issue in the ServiceNow AI Platform. In certain circumstances, an unauthenticated attacker could execute code within the ServiceNow Sandbox. ServiceNow says hosted instances received a security update and it is not currently aware of exploitation against customer instances.
Executive priority
Treat as urgent for any ServiceNow AI Platform deployment because the issue is critical and unauthenticated. Hosted environments may already be addressed, but self-hosted and partner-managed environments require prompt confirmation and remediation tracking.
Technical view
CVE-2026-0542 is a CVSS 4.0 9.2 remote code execution vulnerability in the ServiceNow AI Platform, associated with CWE-653. The attack is network-accessible, requires no privileges or user interaction, but has high attack complexity. Impact is rated high for confidentiality, integrity, and availability within the vulnerable context.
Likely exposure
Organizations using ServiceNow AI Platform should assume relevance until their instance status is confirmed. Hosted customer instances were updated by ServiceNow. Self-hosted customers and partners need to verify that provided security updates, patches, or hot fixes are applied.
Exploitation context
ServiceNow states it is not currently aware of exploitation against customer instances. The CVE is not listed as CISA KEV in the provided data. No public exploit details are included in the source bundle.
Researcher notes
The public bundle lacks detailed affected-version ranges beyond the ServiceNow advisory reference. Analysis should center on ServiceNow KB2693566, CVSS 4.0 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, and confirmation of applied updates.
Mitigation direction
- Review ServiceNow KB2693566 for affected releases and required updates.
- Hosted customers should confirm their instance received ServiceNow’s deployed security update.
- Self-hosted customers and partners should apply provided security updates, patches, or hot fixes.
- Upgrade if ServiceNow guidance indicates patching is not sufficient.
Validation and detection
- Inventory ServiceNow AI Platform usage across hosted, self-hosted, and partner-managed environments.
- Confirm instance version and patch or hot fix status against KB2693566.
- Check ServiceNow support communications for deployment confirmation or required customer action.
- Review security monitoring for unusual activity, without assuming exploitation occurred.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-653: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0542 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.2 (4.0)
- Known Exploited
- No
- Published
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
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
9.2CriticalVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2693566CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Isolation or Compartmentalization
Improper Isolation or Compartmentalization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.