CVE-2026-21262HighMicrosoft CVSS 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Microsoft security update for CVE-2026-21262 — Microsoft SQL Server

Published
May 31, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-21262 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262. This page also shows what EchelonGraph holds for CVE-2026-21262, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products10

  • Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR)
  • Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature Pack
  • Microsoft SQL Server 2017 for x64-based Systems (CU 31)
  • Microsoft SQL Server 2017 for x64-based Systems (GDR)
  • Microsoft SQL Server 2019 for x64-based Systems (CU 32)
  • Microsoft SQL Server 2019 for x64-based Systems (GDR)
  • Microsoft SQL Server 2022 for x64-based Systems (CU 23)
  • Microsoft SQL Server 2022 for x64-based Systems (GDR)
  • Microsoft SQL Server 2025 for x64-based Systems (CU2)
  • Microsoft SQL Server 2025 for x64-based Systems (GDR)

✅ Updates Microsoft lists: 10 updates

10 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
—Security Update14.0.2100.4
—Security Update15.0.2160.4
—Security Update13.0.6480.4
—Security Update14.0.3520.4
—Monthly Rollup13.0.7075.5
—Security Update16.0.1170.5
—Security Update17.0.1105.2
—Security Update15.0.4460.4
—Security Update16.0.4240.4
—Security Update17.0.4020.2

🧭 EchelonGraph on CVE-2026-21262

EchelonGraph score
8.8 HIGH
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2026-21262, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (21)