CVE-2025-59246: Elevation of Privilege in Microsoft Entra

The impact of CVE-2025-59246 is severe due to its potential for privilege escalation. An attacker who successfully exploits this vulnerability could bypass existing security controls and gain administrative access to Microsoft Entra. This could lead to unauthorized access to sensitive data, modification of user accounts and permissions, and ultimately, complete control over the identity and access management system. The blast radius extends to any application or service relying on Microsoft Entra for authentication and authorization, potentially impacting the entire organization. While specific exploitation details remain limited, the criticality suggests a potential for widespread impact if exploited.

1. Reserved2025-09-11
2. Published2025-10-09
3. Modified2026-02-26
4. EPSS updated2026-03-23

Given the lack of a specific fixed version at the time of publication, immediate mitigation steps are crucial. Organizations should review Microsoft's security advisories for recommended workarounds, which may include restricting access to specific Entra ID features or implementing stricter authentication policies. Consider implementing multi-factor authentication (MFA) for all administrative accounts to add an extra layer of security. Regularly monitor Entra ID logs for suspicious activity and implement robust auditing practices. Once a patch is released, prioritize its deployment and verify functionality after upgrade by confirming that user access and permissions remain as expected.