CVE-2026-67637
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Heap-based Buffer Overflow in SQL Server
Vulnerability report for CVE-2026-67637, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-10
Last updated on: 2026-11-10
Assigner: Microsoft Corporation
Description
Description
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (GDR) | From 14.0.0 (inc) to 14.0.2150.2 (exc) |
| Microsoft | Microsoft SQL Server 2017 for x64-based Systems (CU31) | From 14.0.3006.16 (inc) to 14.0.3570.2 (exc) |
| Microsoft | Microsoft SQL Server 2019 (GDR) | From 15.0.0 (inc) to 15.0.2210.4 (exc) |
| Microsoft | Microsoft SQL Server 2019 for x64-based Systems (CU32) | From 15.0.4003.23 (inc) to 15.0.4510.2 (exc) |
| Microsoft | Microsoft SQL Server 2022 (GDR) | From 16.0.0 (inc) to 16.0.1220.3 (exc) |
| Microsoft | Microsoft SQL Server 2022 for x64-based Systems (CU27) | From 16.0.4003.1 (inc) to 16.0.4315.2 (exc) |
| Microsoft | Microsoft SQL Server 2025 CU10 | From 17.0.4006.0 (inc) to 17.0.5045.3 (exc) |
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | From 17.0.1050.2 (inc) to 17.0.1155.3 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-122 | 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(). |
