Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-77486

8.8HIGH

Key Information:

Vendor: Microsoft
Status: Microsoft Sql Server 2017 (cu 31); Microsoft Sql Server 2017 (gdr); Microsoft Sql Server 2019 (cu 32); Microsoft Sql Server 2019 (gdr)
Vendor: CVE Published:; 8 September 2026

What is CVE-2026-77486?

Integer overflow or wraparound in SQL Server allows an unauthorized attacker to execute code over a network.

Microsoft SQL Server 2017 (CU 31) x64-based Systems 14.0.0 < 14.0.3550.4

Microsoft SQL Server 2017 (GDR) x64-based Systems 14.0.0 < 14.0.2130.4

Microsoft SQL Server 2019 (CU 32) x64-based Systems 15.0.0.0 < 15.0.4490.9

Score:

8.8

Severity:

HIGH

Confidentiality:

High

Integrity:

High

Availability:

High

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

Required

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

CVE-2026-77486 Data