Heap-based Buffer Overflow in SQL Server by Microsoft

CVE-2026-116945

What is CVE-2026-116945?

CVE-2026-116945 is a critical vulnerability found in Microsoft SQL Server, a widely used relational database management system designed to handle data storage and retrieval for applications. The vulnerability is characterized as a heap-based buffer overflow, which allows unauthorized attackers to execute arbitrary code over a network. If exploited, this vulnerability could enable attackers to gain control over the database server, manipulate data, or disrupt services significantly. Given that SQL Server is integral to many enterprise environments, particularly those managing sensitive or mission-critical data, this vulnerability poses a substantial risk to organizations relying on this technology.

Potential Impact of CVE-2026-116945

1. Remote Code Execution: Exploiting this vulnerability allows an attacker to execute arbitrary code on the SQL Server, potentially leading to unauthorized access to sensitive information, including personal data and corporate secrets.

2. Data Integrity Compromise: An attacker could manipulate or corrupt data stored in the SQL Server, leading to significant data integrity issues and potentially resulting in the loss of critical business data.

3. Service Disruption: Successful exploitation of this vulnerability could lead to service outages or degraded performance of database operations, impacting application availability and overall business continuity.

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