CVE-2026-69843CWE-290

CVE-2026-69843

Critical · published September 18, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
59.3
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00901 · 59.3th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2026-09-18T04:17Z
Affected products (1)
ProductVersionsFixed in
microsoft/fabricall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69843 · [email protected]
EPSS history
Timeline
  • 19 SEP 03:53Z
    EPSS moved — → 1%
    epss
  • 17 SEP 23:04Z
    Microsoft Fabric Elevation of Privilege Vulnerability
    cvelistv5