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CVE-2026-68883

HighCVSS 8.5/10Last modified Nov 2, 2026

Description

Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.

Metrics

CVSS 3.1 8.5/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

Affected software

Vendor	Product	Versions
Microsoft	Microsoft SQL Server 2017 (GDR)	>= 14.0.0, < 14.0.2140.2
Microsoft	Microsoft SQL Server 2017 for x64-based Systems (CU31)	>= 14.0.3006.16, < 14.0.3560.2
Microsoft	Microsoft SQL Server 2019 (GDR)	>= 15.0.0, < 15.0.2200.2
Microsoft	Microsoft SQL Server 2019 for x64-based Systems (CU32)	>= 15.0.4003.23, < 15.0.4500.2
Microsoft	Microsoft SQL Server 2022 (GDR)	>= 16.0.0, < 16.0.1210.3
Microsoft	Microsoft SQL Server 2022 for x64-based Systems (CU27)	>= 16.0.4003.1, < 16.0.4305.5
Microsoft	Microsoft SQL Server 2025 for x64-based Systems (CU9)	>= 17.0.4006.2, < 17.0.5015.4
Microsoft	Microsoft SQL Server 2025 for x64-based Systems (GDR)	>= 17.0.1050.2, < 17.0.1145.4

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68883Patch, Vendor Advisory

Timeline

Published: Oct 13, 2026
Last modified: Nov 2, 2026
NVD status: Analyzed

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CVE-2026-68883: High severity, CVSS 8.5 | Vulnix