CVE-2026-83945: Microsoft SQL Server Remote Code Execution Vulnerability
Published Oct 13, 2026
·Updated
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Other sources
Microsoft SQL Server Remote Code Execution Vulnerability
— Microsoft
Affected Software
17 affected componentsFixes available
Microsoft SQL Server 2025<17.0.1145.4
17.0.1145.4
Microsoft SQL Server 2022<16.0.1210.3
16.0.1210.3
Microsoft SQL Server 2025
Microsoft SQL Server 2025<17.0.5015.4
17.0.5015.4
Microsoft SQL Server 2022<16.0.4305.5
16.0.4305.5
Microsoft SQL Server 2025>=17.0.4006.2<=17.0.5005.3
17.0.5015.4
Microsoft SQL Server 2025>=17.0.1000.7<=17.0.1135.8
17.0.1145.4
Microsoft SQL Server 2022>=16.0.4003.1<=16.0.4295.3
16.0.4305.5
Microsoft SQL Server 2022>=16.0.1000.6<=16.0.1200.5
16.0.1210.3
Microsoft SQL Server 2019>=15.0.4003.23<=15.0.4490.9
15.0.4500.2
Microsoft SQL Server 2019>=15.0.2000.5<=15.0.2190.7
15.0.2200.2
Microsoft SQL Server 2017>=14.0.3006.16<=14.0.3550.4
14.0.3560.2
Microsoft SQL Server 2017>=14.0.1000.169<=14.0.2130.4
14.0.2140.2
Microsoft SQL Server 2022>=16.0.1000.6<16.0.1210.3
Microsoft SQL Server 2022>=16.0.4003.1<16.0.4305.5
Microsoft SQL Server 2025>=17.0.1000.7<17.0.1145.4
Microsoft SQL Server 2025>=17.0.4006.2<17.0.5015.4
Remediation
Event History
Oct 13, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·08:36 PM
Data Sourced
via MITRE·08:36 PM
DescriptionSeverity
Data Sourced
via NVD·09:19 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What access would an attacker need to exploit this issue?
The attacker must already be authorized and have high privileges on the affected SQL Server environment. The attack can be performed over the network and does not require user interaction.
2
How difficult is exploitation expected to be?
The vulnerability is rated as having high attack complexity, indicating that exploitation requires conditions beyond simply reaching the SQL Server service.
3
What could happen after successful exploitation?
Successful exploitation could have high impact on confidentiality, integrity, and availability, in addition to allowing code execution.