MicrosoftCVE-2026-69843

Microsoft Fabric: authentication bypass

Critical10.0CVE-2026-69843 · Published Sep 18, 2026 · updated Sep 25, 2026

Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.

Microsoft advisory

Affected versions

Package	Affected	Fixed in
Microsoft Fabric Product	all versions	No fix yet

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-290

More Microsoft advisories

Date	Advisory	Severity	Fixed in
Sep 18	Microsoft Edge (Chromium-based): use after free High8.1Sep 18 CVE-2026-88097153.0.4234.46	High8.1	153.0.4234.46
Sep 18	Microsoft Azure HorizonDB: improper authorization Critical9.9Sep 18 CVE-2026-85878No fix yet	Critical9.9	No fix yet
Sep 18	Microsoft 365 Copilot: insecure permissions High7.7Sep 18 CVE-2026-85887No fix yet	High7.7	No fix yet
Sep 18	Microsoft Azure Portal: cross-site scripting High8.2Sep 18 CVE-2026-83946No fix yet	High8.2	No fix yet
Sep 18	Microsoft Azure Billing: privilege escalation Critical10.0Sep 18 CVE-2026-62874No fix yet	Critical10.0	No fix yet
Sep 17	Microsoft 365 Copilot: command injection Critical9.9Sep 17 CVE-2026-85885No fix yet	Critical9.9	No fix yet

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