Vulnerability · Published Aug 20, 2026 · Assigned by microsoft
CVE-2026-63509Microsoft Fabric Elevation of Privilege Vulnerability
Critical 9.9
In plain English
A critical-severity security flaw 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 1.0% (higher than 64% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)1.0%top 36.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Fabric | - |
Weakness: CWE-23 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/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