CVE-2026-88088: Microsoft SQL Server Elevation of Privilege Vulnerability
Integer overflow or wraparound in SQL Server allows an authorized attacker to elevate privileges locally.
Other sources
Microsoft SQL Server Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.1210.3Patch KB5128493 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.4305.5Patch KB5126934 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.4500.2Patch KB5128494 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.2200.2Patch KB5128495 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.1145.4Patch KB5128492 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.5015.4Patch KB5126967
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized and have local access to the affected SQL Server system. The provided vector indicates low privileges are required, but exploitation has high attack complexity.
What is the potential impact of successful exploitation?
Successful exploitation can allow local privilege elevation. The supplied severity vector indicates high potential impact to confidentiality, integrity, and availability.
Which SQL Server releases are listed as affected?
The affected software list includes Microsoft SQL Server 2019, SQL Server 2019 CU32, SQL Server 2022, SQL Server 2022 CU27, SQL Server 2025, SQL Server 2025 CU8, and SQL Server 2025 CU9.