CVE-2026-85886: Microsoft SQL Server Remote Code Execution Vulnerability
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Other sources
Microsoft SQL Server Remote Code Execution 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 17.0.1145.4Patch KB5128492 - 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 17.0.5015.4Patch KB5126967 - 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 14.0.3560.2Patch KB5128496 - 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 14.0.2140.2Patch KB5128497
Event History
Frequently Asked Questions
Does exploitation require an authenticated SQL Server account or user interaction?
Exploitation requires an authorized attacker with low privileges and network access to the affected SQL Server instance. No user interaction is required, although the attack complexity is rated high.
Which SQL Server releases are identified as affected?
The affected software list includes SQL Server 2017, SQL Server 2017 CU31, SQL Server 2019, SQL Server 2019 CU32, SQL Server 2022, SQL Server 2022 CU27, SQL Server 2025, and SQL Server 2025 CU9.