CVE-2026-77483: SQL Server Elevation of Privilege Vulnerability
Published Sep 8, 2026
·Updated
SQL Server Elevation of Privilege Vulnerability
Other sources
Weak authentication in SQL Server allows an authorized attacker to elevate privileges over a network.
— Microsoft
Affected Software
16 affected componentsFixes available
Microsoft SQL Server 2025 (CU8)<17.0.4085.5
17.0.4085.5
Microsoft SQL Server 2025<17.0.1135.8
17.0.1135.8
Microsoft SQL Server 2017 (CU 31)<14.0.3550.4
14.0.3550.4
Microsoft SQL Server 2017<14.0.2130.4
14.0.2130.4
Microsoft SQL Server 2022<16.0.1200.5
16.0.1200.5
Microsoft SQL Server 2019<15.0.2190.7
15.0.2190.7
Microsoft SQL Server 2022 (CU 26)<16.0.4275.2
16.0.4275.2
Microsoft SQL Server 2019 (CU 32)<15.0.4490.9
15.0.4490.9
Microsoft SQL Server 2017<14.0.2130.4
Microsoft SQL Server 2017>=14.0.3006.16<14.0.3550.4
Microsoft SQL Server 2019<15.0.2190.7
Microsoft SQL Server 2019>=15.0.4003.23<15.0.4490.9
Microsoft SQL Server 2022<16.0.1200.5
Microsoft SQL Server 2022>=16.0.4003.1<16.0.4275.2
Microsoft SQL Server 2025<17.0.1135.8
Microsoft SQL Server 2025>=17.0.4006.2<17.0.4085.5
Remediation
Event History
Sep 8, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·05:18 PM
Data Sourced
via MITRE·05:18 PM
DescriptionSeverity
Data Sourced
via NVD·06:20 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Which SQL Server deployments should be prioritized for review?
Review Microsoft SQL Server 2017, 2019, 2022, and 2025 deployments, including the listed SQL Server 2017 CU 31, SQL Server 2019 CU 32, and SQL Server 2022 CU 26 releases.
2
What level of access does an attacker need?
The attacker must already be authorized to access SQL Server and must be able to reach it over the network. No user interaction is required.
3
What could successful exploitation allow?
Successful exploitation can elevate the authorized attacker’s privileges. The supplied severity data indicates high potential impact to confidentiality, integrity, and availability.