Critical CVSS 10.0 ServiceNow Flaws Enable Unauthenticated Code Execution
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Three critical vulnerabilities in ServiceNow's AI Platform — including code injection, SQL injection, and improper access control — received the maximum CVSS score of 10.0, meaning unauthenticated attackers could fully compromise affected instances without any credentials. The root problem lies in inadequate input validation and missing authentication enforcement on sensitive endpoints, two foundational secure-coding failures. Self-hosted customers face the greatest risk because they must manually apply patches, unlike hosted instances that were updated automatically. This incident underscores how enterprise platforms handling sensitive business data can become single points of catastrophic failure when patch cycles lag behind disclosed vulnerabilities.
Tactical Insight
Immediate actions
- Apply ServiceNow's released patches immediately, prioritizing any internet-facing or self-hosted instances.
- Audit all ServiceNow instances to confirm patch status and identify any unmanaged or shadow deployments.
- Temporarily restrict public-facing ServiceNow access via firewall rules or IP allowlisting until patches are confirmed applied.
Long-term improvements
- Establish an emergency patching SLA (e.g., 24–48 hours) for any vulnerability rated CVSS 9.0 or higher.
- Maintain a complete, up-to-date inventory of all SaaS and self-hosted platform instances to ensure no asset is missed during patch campaigns.
- Enforce a secure-by-default posture by requiring authentication on all API endpoints and validating all user-supplied input at the application layer.
Detection measures
- Deploy web application firewall (WAF) rules to detect and block SQL injection and code injection patterns targeting ServiceNow endpoints.
- Enable logging and real-time alerting on anomalous or unauthenticated access attempts against ServiceNow APIs.
- Conduct regular authenticated and unauthenticated vulnerability scans against all enterprise platforms to surface exploitable flaws before attackers do.