Riskcovery

CVE-2026-66818

Microsoft SQL Server Elevation of Privilege Vulnerability

State
Published
Severity
8.8 High
Published
Sep 8, 2026
Updated
Oct 31, 2026
Reserved
Jul 27, 2026

Read the record on cve.org

Description

Improper privilege management in SQL Server allows an authorized attacker to elevate privileges over a network.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Cmicrosoft

Weaknesses

  • CWE-269 Improper Privilege Management

Affected Products

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

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.