Introduction
Privilege escalation in cloud identity platforms can enable attackers to gain unrestricted access to enterprise resources. CVE-2025-59218, reported in October 2025, is a critical vulnerability in Microsoft Azure Entra ID that underscores ongoing risks in cloud authentication and authorization infrastructure.
Microsoft Azure Entra ID is a foundational identity and access management service used by millions of organizations globally. It provides authentication and authorization for Microsoft 365, Azure, and thousands of third-party applications. Security issues in this platform can have wide-reaching consequences for enterprise security.
Technical Information
No specific technical details about the exploitation mechanism, root cause, or vulnerable code for CVE-2025-59218 have been published in public advisories or databases as of October 9, 2025. The vulnerability is classified under CWE-284 (Improper Access Control), which generally involves failures in authentication or authorization logic that allow unauthorized privilege elevation.
Context from similar Azure Entra ID vulnerabilities in 2025, such as CVE-2025-55241, suggests that issues with token validation, cross-tenant access controls, or legacy API behaviors may be relevant. However, there is no direct technical evidence or exploit information available for CVE-2025-59218.
Affected Systems and Versions
No specific product version numbers or configuration details have been disclosed for CVE-2025-59218. The vulnerability is described as affecting Microsoft Azure Entra ID. No version ranges or affected configurations are listed in public sources as of the advisory date.
Vendor Security History
Microsoft has addressed several critical vulnerabilities in Azure Entra ID in 2025. Notably, CVE-2025-55241 was a privilege escalation issue with a CVSS score of 10.0, involving improper token validation in the legacy Azure AD Graph API. Microsoft responded to that incident with a rapid server-side fix. The recurrence of high-severity privilege escalation vulnerabilities in Azure Entra ID indicates ongoing architectural and implementation challenges in the platform's security.
