Microsoft Entra Agent ID Flaw Enabled Privilege Escalation and Tenant Takeover

A security flaw in Microsoft Entra Agent ID enabled privilege escalation and tenant takeover through Service Principal abuse, as identified by researchers. The vulnerability allowed attackers to exploit misconfigurations or weak permissions to gain elevated access within Microsoft Entra environments. Microsoft has since fully patched the issue, though no specific CVE ID, dates, or technical exploitation details were disclosed. The impact included potential unauthorized control over entire Microsoft Entra tenants, risking identity theft and lateral movement. The discovery was reported by cybersecurity firm Silverfort, which highlighted the risks of improperly secured identity and access management systems.