CVE-2026-85876: Microsoft SQL Server Elevation of Privilege Vulnerability
Microsoft SQL Server Elevation of Privilege Vulnerability
Other sources
Use after free in SQL Server allows an authorized attacker to elevate privileges locally.
— 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 15.0.4500.2Patch KB5128494 - 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 16.0.1210.3Patch KB5128493 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.5015.4Patch KB5126967 - 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 15.0.2200.2Patch KB5128495
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running the listed Microsoft SQL Server 2019, 2022, or 2025 software and cumulative update versions are potentially affected. Exploitation is local rather than network-based.
What level of access does an attacker need?
An attacker must already be authorized and have local access with low privileges. No user interaction is required.
What could an attacker achieve?
Successful exploitation could allow the attacker to elevate privileges. The supplied severity vector indicates potential impact to confidentiality, integrity, and availability.