Microsoft SQL Server Denial of Service Vulnerability
CVE-2026-67641

6.5MEDIUM

Key Information:

Vendor: Microsoft
Status: Microsoft Sql Server 2022 (cu 26); Microsoft Sql Server 2022 (gdr); Microsoft Sql Server 2025 (cu8); Microsoft Sql Server 2025 For X64-based Systems (gdr)
Vendor: CVE Published:; 8 September 2026

What is CVE-2026-67641?

Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.

Microsoft SQL Server 2022 (CU 26) x64-based Systems 16.0.0.0 < 16.0.4275.2

Microsoft SQL Server 2022 (GDR) x64-based Systems 16.0.0 < 16.0.1200.5

Microsoft SQL Server 2025 (CU8) x64-based Systems 17.0.0.0 < 17.0.4085.5

Score:

6.5

Severity:

MEDIUM

Confidentiality:

None

Integrity:

None

Availability:

None

Attack Vector:

Network

Attack Complexity:

Low

Privileges Required:

Low

User Interaction:

None

Scope:

Unchanged

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CVE-2026-67641 Data