CVE-2026-63509
Microsoft Fabric Elevation of Privilege Vulnerability
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Fabric Elevation of Privilege Vulnerability
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-63509- CVSS 3.1
- 9.9 Critical
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 - Weakness
- CWE-23
- Updated
- 2026-11-10
EUVDEUVD-2026-63620
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
- Record
EUVD-2026-63620- CVSS 3.1
- 9.9 Critical
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 - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-3r75-wcfw-gxm8
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges...
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
- Record
GHSA-3r75-wcfw-gxm8- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-23
- Updated
- 2026-11-02
NVD
Relative path traversal in Microsoft Fabric allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-63509- CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-23
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | EUVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-63509 is a critical vulnerability (CVSS 9.9) in Microsoft Fabric, published August 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.02%, the 63rd percentile. No source names a fixed version.