# CVE-2026-66309

## Summary

- **CVE ID:** CVE-2026-66309
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (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)
- **CWE:** CWE-284
- **Published:** Aug 20, 2026
- **Last Modified:** Sep 16, 2026

## Description

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

## Affected Products

- Microsoft — Azure SQL Database (-)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66309)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.47%
- **EPSS Percentile:** 39.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._