CVE-2026-70178

Microsoft Fabric Elevation of Privilege Vulnerability

Published Sep 3, 2026 CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Description
Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.

Analysis

AI-generated

Technical impact

Missing authorization controls within Microsoft Fabric allow an attacker who already holds authorizations over a network to gain higher privileges. The flaw is assigned CWE-862, indicating a missing or improper access control. Once exploited, an attacker could elevate privileges and potentially access or modify data and resources beyond their intended scope, compromising confidentiality, integrity, or availability.

Affected Systems

Microsoft Fabric is affected by this vulnerability. No specific version information was provided in the advisory, so all current deployments of Microsoft Fabric should be considered at risk.

Risk and Exploitability

The vulnerability carries a CVSS score of 8.5, classifying it as high severity. The EPSS score is currently not available, and it is not listed in the CISA KEV catalog, indicating a lower known exploitation likelihood as of now. The likely attack vector requires an authorized attacker with network access and permissions to send requests to Microsoft Fabric services, after which the missing authorization allows privilege escalation.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Check Microsoft’s security update page for the latest Microsoft Fabric patch addressing CVE‑2026‑70178 and apply it as soon as possible.
  • Ensure that role‑based access control enforces the principle of least privilege, restricting high‑privilege actions to only those users who absolutely require them.
  • Continuously monitor and audit privilege changes and suspicious activity within your Fabric environment to detect potential misuse early.

Generated by OpenCVE AI on September 4, 2026 at 00:23 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Microsoft fabric
CPEs cpe:2.3:a:microsoft:fabric:-:*:*:*:*:*:*:*
Vendors & Products Microsoft fabric
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Missing authorization in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
Title Microsoft Fabric Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft microsoft Fabric
Weaknesses CWE-862
CPEs cpe:2.3:a:microsoft:microsoft_fabric:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft microsoft Fabric
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 9:29 PM
Reserved
Aug 3, 2026, 11:48 PM
Status
Analyzed
Published
Sep 3, 2026, 11:17 PM
Modified
Sep 8, 2026, 5:55 PM