High MSRC-CVE-2026-67641 1 CVE

Microsoft SQL Server Denial of Service Vulnerability

Published Sep 8, 2026 · Updated Sep 8, 2026

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

Security updates
16.0.1200.5 — https://support.microsoft.com/help/5122771
17.0.1135.8 — https://support.microsoft.com/help/5122770
17.0.4085.5 — https://support.microsoft.com/help/5122769
16.0.4275.2 — https://support.microsoft.com/help/5122768

Vulnerabilities 1

Medium 6.5

CVE-2026-67641

Microsoft SQL Server Denial of Service Vulnerability

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

Microsoft Microsoft SQL Server 2022 (GDR) Microsoft SQL Server 2025 for x64-based Systems (GDR) Microsoft SQL Server 2025 (CU8)

Sep 8, 2026

Revision history

2026-09-08 #1
Information published.

References

CVE-2026-67641 Microsoft SQL Server Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67641
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss