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High8.8Microsoft Server Updated

High [CVE-2026-77487] SQL Server Elevation of Privilege Vulnerability

This high-severity Microsoft Server advisory covers CVE-2026-77487 affecting Microsoft SQL Server 2017, Microsoft SQL Server 2019, Microsoft SQL Server 2022.

CVE-2026-77487 Published Sep 8, 2026Updated by vendor Sep 8, 2026
CVE-2026-77487
Affected products & platforms
Microsoft ServerSQL Server
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Summary

SQL Server Elevation of Privilege Vulnerability

Affected products named by the advisory: Microsoft SQL Server 2017; Microsoft SQL Server 2019; Microsoft SQL Server 2022; Microsoft SQL Server 2025.

Affected versions
  • Microsoft SQL Server 2017 (CU 31) 14.0.0 before 14.0.3550.4
  • Microsoft SQL Server 2017 (GDR) 14.0.0 before 14.0.2130.4
  • Microsoft SQL Server 2019 (CU 32) 15.0.0.0 before 15.0.4490.9
  • Microsoft SQL Server 2019 (GDR) 15.0.0 before 15.0.2190.7
  • Microsoft SQL Server 2022 (CU 26) 16.0.0.0 before 16.0.4275.2
  • Microsoft SQL Server 2022 (GDR) 16.0.0 before 16.0.1200.5
  • Microsoft SQL Server 2025 (CU8) 17.0.0.0 before 17.0.4085.5
  • Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1050.2 before 17.0.1135.8

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions
  • KB5122775 (build 14.0.2130.4)
  • KB5122773 (build 15.0.2190.7)
  • KB5122774 (build 14.0.3550.4)
  • KB5122771 (build 16.0.1200.5)
  • KB5122770 (build 17.0.1135.8)
  • KB5122772 (build 15.0.4490.9)
  • KB5122769 (build 17.0.4085.5)
  • KB5122768 (build 16.0.4275.2)

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Install the applicable security update for your platform: KB5122775, KB5122773, KB5122774, KB5122771, KB5122770, KB5122772 (see the Microsoft Update Catalog).

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

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