Vulnerability · Published Sep 17, 2026 · Assigned by microsoft
CVE-2026-69843Microsoft Fabric Elevation of Privilege Vulnerability
Critical 10.0
In plain English
A critical-severity authentication bypass by spoofing in Microsoft Fabric from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)10.0Critical
Exploit odds (30 days)0.9%top 40.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Fabric | - |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Fabric Elevation of Privilege Vulnerability vendor-advisory, patch