Description
Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.
Published: 2026-08-20
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Azure SQL Database contains an improper access control flaw that permits an attacker who already has some level of access over a network to gain higher privileges. The vulnerability can enable an attacker to perform unauthorized actions such as creating or modifying database objects, reading sensitive data, or executing arbitrary SQL commands, thereby compromising confidentiality, integrity, and availability of the protected data. The weakness is classified as CWE‑284, reflecting a failure of access control. The CVSS score of 9.1 indicates a high severity and the potential for significant damage if exploited.

Affected Systems

The affected product is Microsoft Azure SQL Database. No specific service pack or version is listed, so all deployments of the base Azure SQL Database service are potentially impacted until the patch is applied.

Risk and Exploitability

The flaw has a severe CVSS score and is currently not documented in the CISA KEV catalog; its EPSS metric is not available. Attackers would need network connectivity to the database instance and an existing authenticated or partially authenticated session. Because the vulnerability can be leveraged after obtaining any level of network access, the risk of exploitation is considered high in environments that expose Azure SQL Database endpoints to broader networks. No additional exploitation prerequisites are disclosed in the provided data.

Generated by OpenCVE AI on August 21, 2026 at 00:27 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the security update released by Microsoft for Azure SQL Database that fixes the improper access control flaw, as documented in the Microsoft Update Guide.
  • Restrict network access to the Azure SQL Database instance by limiting connections to trusted IPs or virtual networks and enforcing a strict firewall rule set.
  • Enforce least privilege by reviewing and tightening role‑based access control settings for all database users, ensuring no unnecessary permissions are granted.

Generated by OpenCVE AI on August 21, 2026 at 00:27 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 24 Aug 2026 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:azure_sql_database:-:*:*:*:*:*:*:*

Fri, 21 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 20 Aug 2026 22:00:00 +0000

Type Values Removed Values Added
Description Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.
Title Azure SQL Database Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft azure Sql Database
Weaknesses CWE-284
CPEs cpe:2.3:a:microsoft:azure_sql_database:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft azure Sql Database
References
Metrics cvssV3_1

{'score': 9.1, 'vector': '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'}


Subscriptions

Microsoft Azure Sql Database
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-09-09T19:38:34.864Z

Reserved: 2026-07-24T18:06:51.295Z

Link: CVE-2026-66309

cve-icon Vulnrichment

Updated: 2026-08-21T15:33:08.492Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-20T22:17:55.790

Modified: 2026-08-24T17:56:58.983

Link: CVE-2026-66309

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T00:45:06Z

Weaknesses