CVE-2026-88089

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code locally.

Score

CVSS 3.1 6.7 Medium

Status

Awaiting Analysis - secure@microsoft.com

Published

2026-10-13

Last modified

2026-10-28

Weaknesses

CWE-122, CWE-20

Affected products

• Microsoft Sql Server 2017 For X64-based Systems (cu31) (Microsoft)
• Microsoft Sql Server 2019 For X64-based Systems (cu32) (Microsoft)
• Microsoft Sql Server 2022 For X64-based Systems (cu27) (Microsoft)
• Microsoft Sql Server 2025 For X64-based Systems (cu9) (Microsoft)
• Sql Server 2017 (Microsoft)
• Sql Server 2019 (Microsoft)
• Sql Server 2022 (Microsoft)
• Sql Server 2025 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88089