Authentication Bypass in Microsoft Fabric by Microsoft
CVE-2026-69843

10CRITICAL

Key Information:

Vendor

Microsoft
Status
Microsoft Fabric
Vendor
CVE Published:
17 September 2026

What is CVE-2026-69843?

An authentication bypass vulnerability in Microsoft Fabric allows unauthorized attackers to spoof authentication and elevate their privileges over a network. This flaw potentially grants malicious users elevated access to sensitive data and resources, posing significant risks to system integrity and confidentiality. Organizations using Microsoft Fabric should take immediate action to mitigate this vulnerability through available patches and security measures.

Affected Version(s)

Microsoft Fabric -

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.