Vulnerability Intelligence Report
Microsoft Fabric Elevation of Privilege Vulnerability
CVE-2026-63509
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
No Active Exploit Signals
CVSS Base Score
9.9
CRITICAL
Exploitability:3.2
Impact Score:6.1
EPSS Probability:0.62%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-23 ↗CWE-23: Relative Path Traversal
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft Fabric | - (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.622%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-07-16T22:05:22 |
| Published | 2026-08-20T21:47:06 |
| Patch Date | 2026-08-20 |
| Last Updated | 2026-09-16T16:27:04 |
Community Chatter & Buzz