Microsoft Entra Provisioning Service Elevation of Privilege Vulnerability

Date Jul 2, 2026

Type Patch Tuesday

Signal Critical vendor advisory

Vendor / Product Microsoft · Microsoft Entra Provisioning Service (SyncFabric)

CVE CVE-2026-57100

Critical vendor advisory CVE-2026-57100

Summary

Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network. Published in July 2026 Early Security Updates. MSRC exploitability: Publicly Disclosed:No;Exploited:No;Latest Software Release:N/A.

Why it matters

Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-57100. Confirm whether Microsoft Entra Provisioning Service (SyncFabric) is deployed, then apply the current security update or documented mitigation. CVSS score: 9.9.

Sources

MSRC 2026-Jul Security Update Guide NVD — CVE-2026-57100

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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