CVE-2026-66814

No fix known EPSS <1%CVSS 8.8

Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.

Published 2026-09-08 · CVE record · OSV

Products: Microsoft SQL Server 2017 (CU 31), Microsoft SQL Server 2017 (GDR), Microsoft SQL Server 2019 (CU 32), Microsoft SQL Server 2019 (GDR), Microsoft SQL Server 2022 (CU 26), Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2025 (CU8), Microsoft SQL Server 2025 for x64-based Systems (GDR)