Oct 2026: Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-88089 Published on October 13, 2026
Microsoft SQL Server Remote Code Execution Vulnerability
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally.
Weakness Types
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-88089
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Affected Versions
Microsoft SQL Server 2017 (GDR):- Version 14.0.0 and below 14.0.2140.2 is affected.
- Version 14.0.3006.16 and below 14.0.3560.2 is affected.
- Version 15.0.0 and below 15.0.2200.2 is affected.
- Version 15.0.4003.23 and below 15.0.4500.2 is affected.
- Version 16.0.0 and below 16.0.1210.3 is affected.
- Version 16.0.4003.1 and below 16.0.4305.5 is affected.
- Version - is affected.
- Version 17.0.4006.2 and below 17.0.5015.4 is affected.
- Version 17.0.1050.2 and below 17.0.1145.4 is affected.