Executive brief
A critical security vulnerability has been identified in Microsoft Entra Provisioning Service, a tool used to synchronize user identities across different applications and cloud services. An attacker with basic user permissions could exploit this flaw to gain unauthorized administrative access and take full control over identity management systems. This could lead to widespread data breaches, unauthorized account creation, or a total compromise of the organization's cloud security infrastructure.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in the Microsoft Entra Provisioning Service (SyncFabric) component. The flaw, tracked as CWE-918, allows an authenticated attacker with low-level privileges (PR:L) to send specially crafted network requests from the service's backend infrastructure. By exploiting this SSRF, the attacker can bypass security boundaries (Scope: Changed) to access internal resources or metadata services, ultimately leading to a full elevation of privileges. This allows for complete compromise of confidentiality, integrity, and availability within the affected environment. As this is an exclusively hosted service, Microsoft typically manages the deployment of fixes directly to the cloud environment.
Affected products
- Microsoft Entra Provisioning Service (SyncFabric) All versions
Timeline
- 2026-07-02: disclosed: Vulnerability published by Microsoft and NVD.