Microsoft Fabric Elevation of Privilege Vulnerability

Date Sep 3, 2026

Type Patch Tuesday

Signal High-risk advisory

Vendor / Product Microsoft · Microsoft Fabric

CVE CVE-2026-70178

High-risk advisory CVE-2026-70178

Summary

Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network. Published in September 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. EPSS percentile: 35%.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-70178. Confirm whether Microsoft Fabric is deployed, then apply the current security update or documented mitigation. CVSS score: 8.5. EPSS probability: 0.4%; percentile: 35%.

Sources

MSRC 2026-Sep Security Update Guide NVD — CVE-2026-70178

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

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