ServiceNow Flaw Exploited to Gain Unauthorized Access to Customer Instances

ServiceNow disclosed a security incident on June 5, 2026, where threat actors exploited a vulnerability to gain unauthorized access to customer instances. The company applied a security update to affected hosted instances to address the issue, which could have allowed unauthenticated users to access sensitive customer data. The advisory, accessible to customers, detailed that the vulnerability was identified and patched promptly. ServiceNow stated that their investigation, which began on May 29, 2026, determined the scope of the incident and the specific instances impacted. The company is working with affected customers to ensure their environments are secure and to provide guidance on remediation steps. While the exact nature of the exploited flaw has not been fully detailed publicly, ServiceNow emphasized that the vulnerability was specific to their hosted instances and did not affect on-premises deployments. The company also confirmed that they are enhancing their security monitoring and incident response protocols to prevent future occurrences. This incident highlights the ongoing challenges in securing cloud-based enterprise software and the critical importance of timely patching and robust security measures.