CVE-2026-63509CWE-23

CVE-2026-63509

Critical · published August 21, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
63.2
In the wild
Unconfirmed
What it is

Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01024 · 63.2th percentile
Weakness
CWE-23 · Relative Path Traversal
Published
2026-08-21T02:17Z
Affected products (1)
ProductVersionsFixed in
microsoft/fabricall versions—
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63509 · [email protected]
EPSS history
Timeline
  • 20 AUG 21:47Z
    Microsoft Fabric Elevation of Privilege Vulnerability
    cvelistv5