Critical Azure Automation Vulnerability (CVE-2025-29827) Exposes Cross-Tenant Identity Risks
In May 2025, a critical vulnerability (CVE-2025-29827) was identified in Microsoft's Azure Automation service, which is widely used for DevOps, resource deployment, and configuration management. The flaw stemmed from improper authorization mechanisms, allowing authenticated attackers to escalate privileges over the network. Exploiting this vulnerability, attackers could assume another tenant's automation identity, enabling them to create or modify automation scripts and access sensitive configuration data or credentials stored in Azure Automation accounts. This could lead to unauthorized creation, modification, or deletion of resources across an organization's cloud workloads. The vulnerability was assigned a CVSS score of 9.9, indicating its critical severity. Microsoft addressed the issue by updating the default settings to prevent automation accounts from being publicly accessible and issued an advisory to inform users of the necessary security measures. Organizations are advised to audit their Azure Automation configurations and ensure that proper access controls are in place to mitigate potential attacks.
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