CVE-2026-66818

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

Score

CVSS 3.1 8.8 High

Status

Analyzed - secure@microsoft.com

Published

2026-09-08

Last modified

2026-10-14

Weaknesses

CWE-269

Affected products

• Sql Server 2017 (Microsoft)
• Sql Server 2019 (Microsoft)
• Sql Server 2022 (Microsoft)
• Sql Server 2025 (Microsoft)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66818