← Vulnerability feed

Vulnerability record · CVE-2026-66309 · published 20 August 2026

CVE-2026-66309: Microsoft azure sql database improper access control vulnerability

Microsoft · Azure Sql Database

Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.

9.1 CVSS 3.1 Critical EPSS 0.86% · top 43.1% CWE-284 · Improper access control
9.1CVSS 3.1 base score
0.86%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
24 Aug 2026Last modified by NVD

Description

Improper access control in Azure SQL Database allows an authorized attacker to elevate privileges over a network.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66309 Vendor Advisory

Track CVE-2026-66309 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-69502Microsoft azure sql database server-side request forgery (ssrf) vulnerabilityServer-side request forgery (ssrf) in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.EPSS 0.80%10.0CVE-2026-56162Microsoft azure sql database improper authentication vulnerabilityImproper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.EPSS 0.90%9.9CVE-2026-68782Microsoft azure sql database sql injection vulnerabilityImproper neutralization of special elements used in an sql command ('sql injection') in Azure SQL Database allows an authorized attacker to elevate p…EPSS 0.99%9.9CVE-2026-68789Microsoft azure sql database sql injection vulnerabilityImproper neutralization of special elements used in an sql command ('sql injection') in Azure SQL Database allows an authorized attacker to elevate p…EPSS 0.99%7.8CVE-2026-63522Microsoft azure sql database incorrect permission assignment vulnerabilityIncorrect permission assignment for critical resource in Azure SQL Database allows an authorized attacker to elevate privileges locally.EPSS 0.30%7.8CVE-2026-81963Windows Update Stack link-following privilege escalationWindows Update Stack resolves links improperly before accessing files, a link-following flaw (CWE-59) compounded by improper access control (CWE-284)…KEVEPSS 0.39%analysed10.0CVE-2026-21962Oracle HTTP Server and WebLogic Proxy Plug-in improper access controlOracle HTTP Server and the WebLogic Server Proxy Plug-in (for Apache HTTP Server and IIS) contain an improper access control flaw (CWE-284) in suppor…KEVEPSS 71%analysed10.0CVE-2026-34908Ubiquiti UniFi OS improper access control allows unauthorized system changesUniFi OS devices contain an improper access control flaw (CWE-284) that lets a network-reachable actor make unauthorized changes to the system. The C…KEVEPSS 15%analysed

Source: NIST National Vulnerability Database (record CVE-2026-66309), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.