CVE-2026-66309
Azure SQL Database Elevation of Privilege Vulnerability
Improper access control in Azure SQL Database 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
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Azure SQL Database Elevation of Privilege Vulnerability
Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-66309- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2026-63622
Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.
- Record
EUVD-2026-63622- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-883f-j6q4-245q
Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges...
Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.
- Record
GHSA-883f-j6q4-245q- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-66309- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-66309 is a critical vulnerability (CVSS 9.1) in Microsoft Azure Sql Database, published August 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 58th percentile. No source names a fixed version.