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Microsoft Security Response CenterCVE-2026-88084

Microsoft SQL Server Denial of Service Vulnerability

HighVendor CVSS 5.3 / 10 1 CVE Published Oct 13, 2026 at 7:00 AM UTC

Summary

Allocation of resources without limits or throttling in SQL Server allows an authorized attacker to deny service over a network.

Products covered

  • Microsoft SQL Server 2019 for x64-based Systems (CU32)

  • Microsoft SQL Server 2019 for x64-based Systems (GDR)

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

Remediation

Install KB5128494. Install KB5128495.

Vendor-listed fixes

  • 15.0.4500.2

  • 15.0.2200.2

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.