Executive brief
Microsoft SQL Server contains an out-of-bounds read vulnerability that allows an unauthenticated attacker to execute arbitrary code remotely without user interaction. SQL Server is a critical database system used by organizations to store and manage sensitive business data. Successful exploitation could lead to complete database compromise, data theft, service disruption, and lateral movement within the organization's infrastructure.
Technical details
The vulnerability is an out-of-bounds read in Microsoft SQL Server that can be exploited to achieve remote code execution (RCE). The flaw allows an unauthenticated attacker on the network to send specially crafted requests that trigger memory access beyond allocated buffer boundaries. The out-of-bounds read can be leveraged to leak sensitive data or corrupt memory state, ultimately enabling arbitrary code execution with the privileges of the SQL Server process. This is a network-reachable vulnerability requiring no authentication or user interaction. Patch availability should be verified through Microsoft's Security Response Center.
Affected products
- Microsoft SQL Server
Timeline
- 2026-09-08: disclosed