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Microsoft Security Response CenterCVE-2026-47297

Microsoft SQL Server Remote Code Execution Vulnerability

HighVendor CVSS 8.1 / 10 1 CVE Published Sep 8, 2026 at 7:00 AM UTC

Summary

Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.

Products covered

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

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

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

  • Microsoft SQL Server 2019 for x64-based Systems (CU 32)

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

  • Microsoft SQL Server 2022 for x64-based Systems (CU 26)

Remediation

Install KB5122773. Install KB5122771. Install KB5122770. Install KB5122772. Install KB5122769. Install KB5122768.

Vendor-listed fixes

  • 15.0.2190.7

  • 16.0.1200.5

  • 17.0.1135.8

  • 15.0.4490.9

  • 17.0.4085.5

  • 16.0.4275.2

CVEs in this advisory 1

Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • Removed affected products: Microsoft SQL Server 2022 for x64-based Systems (CU 25), Microsoft SQL Server 2025 for x64-based Systems (CU6).
    • Removed fixed versions: 16.0.4262.2, 17.0.4060.2.
    • The vendor changed its remediation guidance.

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.