CVE-2026-66819: Microsoft SQL Server Elevation of Privilege Vulnerability
Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.
Other sources
Microsoft SQL Server Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must be authorized to access the affected SQL Server instance and able to reach it over the network. The provided information does not indicate that unauthenticated attackers can exploit it.
What level of impact could successful exploitation have?
Successful exploitation can allow privilege elevation and is rated high severity with a CVSS score of 8.8. The supplied vector indicates potential high impact to confidentiality, integrity, and availability.
Which SQL Server releases are identified as affected?
The listed affected products are SQL Server 2017, SQL Server 2019, SQL Server 2022, and SQL Server 2025, including SQL Server 2017 CU31, SQL Server 2019 CU32, SQL Server 2022 CU26, and SQL Server 2025 CU8.