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CVE-2026-21262

HIGH CVSS 3.1: 8.8 EPSS 0.10%
Updated Mar 13, 2026
Microsoft
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions 13.0.6300.2 — 17.0.4020.2
Fixed In 13.0.6480.4
Type CWE-284 (Improper Access Control)
Vendor Microsoft
Public PoC No

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

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 10

Configuration From (including) Up to (excluding)
Microsoft Sql_Server_2016
cpe:2.3:a:microsoft:sql_server_2016:*:*:*:*:*:*:x64:*
13.0.6300.2 13.0.6480.4
Microsoft Sql_Server_2016
cpe:2.3:a:microsoft:sql_server_2016:*:*:*:*:*:*:x64:*
13.0.7000.253 13.0.7075.5
Microsoft Sql_Server_2017
cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*
14.0.1000.169 14.0.2100.4
Microsoft Sql_Server_2017
cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*
14.0.3006.16 14.0.3520.4
Microsoft Sql_Server_2019
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*
15.0.2000.5 15.0.2160.4
Microsoft Sql_Server_2019
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*
15.0.4003.23 15.4460.4
Microsoft Sql_Server_2022
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*
16.0.1000.6 16.0.1170.5
Microsoft Sql_Server_2022
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*
16.0.4003.1 16.0.4240.4
Microsoft Sql_Server_2025
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*
17.0.1000.7 17.0.1105.2
Microsoft Sql_Server_2025
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*
17.0.4006.2 17.0.4020.2