CVE-2026-85919: Microsoft SQL Server Elevation of Privilege Vulnerability
Heap-based buffer overflow 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 15.0.4500.2Patch KB5128494 - 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 - 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 15.0.2200.2Patch KB5128495
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running the listed Microsoft SQL Server 2019, 2022, or 2025 products are in scope. Exploitation is local rather than network-based.
What access does an attacker need to exploit it?
An attacker must already be authorized and have local access with low-level privileges. No user interaction is required.
What is the likely impact if exploitation succeeds?
Successful exploitation can elevate the attacker's privileges. The supplied severity data indicates potential high impact to confidentiality, integrity, and availability.
Does the available information identify a workaround or mitigation for systems that cannot be patched immediately?
No workaround, configuration mitigation, or method for determining prior compromise is provided in the available data.