CVE-2026-21262— SQL Server Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Microsoft SQL Server 2016 Service Pack 3 (GDR)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft SQL Server是美国微软（Microsoft）公司的一套应用在Microsoft Windows系统下的大型商业数据库系统。 Microsoft SQL Server存在访问控制错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Microsoft SQL Server 2017 for x64-based Systems (GDR),Microsoft SQL Server 2019 for x64-based Systems (GDR),Microsoft SQL
Possible ATT&CK Techniques 2 AI
T1078 · Valid Accounts T1068 · Exploitation for Privilege EscalationAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 (GDR) | 13.0.0< 13.0.6480.4 |
affected |
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack | 13.0.0< 13.0.7075.5 |
affected |
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0< 14.0.3520.4 |
affected |
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0< 14.0.2100.4 |
affected |
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0< 15.0.4460.4 |
affected |
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0< 15.0.2160.4 |
affected |
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0< 16.0.1170.5 |
affected |
| Microsoft | Microsoft SQL Server 2022 for x64-based Systems (CU 23) | 16.0.0.0< 16.0.4240.4 |
affected |
| Microsoft | Microsoft SQL Server 2025 (CU 2) | 17.0.0.0< 17.0.4020.2 |
affected |
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | 17.0.1050.2< 17.0.1105.2 |
affected |
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I. Basic Information for CVE-2026-21262
Vulnerability Information
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Vulnerability Title
SQL Server Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft SQL Server 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft SQL Server是美国微软（Microsoft）公司的一套应用在Microsoft Windows系统下的大型商业数据库系统。 Microsoft SQL Server存在访问控制错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Microsoft SQL Server 2017 for x64-based Systems (GDR),Microsoft SQL Server 2019 for x64-based Systems (GDR),Microsoft SQL
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 (GDR) | 13.0.0 ~ 13.0.6480.4 | - |
|
| Microsoft | Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack | 13.0.0 ~ 13.0.7075.5 | - |
|
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0 ~ 14.0.3520.4 | - |
|
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0 ~ 14.0.2100.4 | - |
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0 ~ 15.0.4460.4 | - |
|
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0 ~ 15.0.2160.4 | - |
|
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0 ~ 16.0.1170.5 | - |
|
| Microsoft | Microsoft SQL Server 2022 for x64-based Systems (CU 23) | 16.0.0.0 ~ 16.0.4240.4 | - |
|
| Microsoft | Microsoft SQL Server 2025 (CU 2) | 17.0.0.0 ~ 17.0.4020.2 | - |
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | 17.0.1050.2 ~ 17.0.1105.2 | - |
|
II. Public POCs for CVE-2026-21262
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-21262 (1)
Same Patch Batch · Microsoft · 2026-03-10 · 78 CVEs total
| CVE-2026-26106 | 8.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2026-26118 | 8.8 HIGH | Azure MCP Server Tools Elevation of Privilege Vulnerability |
| CVE-2026-25188 | 8.8 HIGH | Windows Telephony Service Elevation of Privilege Vulnerability |
| CVE-2026-23669 | 8.8 HIGH | RPC Runtime Library Remote Code Execution Vulnerability |
| CVE-2026-25177 | 8.8 HIGH | Active Directory Domain Services Elevation of Privilege Vulnerability |
| CVE-2026-23654 | 8.8 HIGH | GitHub: Zero Shot SCFoundation Remote Code Execution Vulnerability |
| CVE-2026-26114 | 8.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2026-24283 | 8.8 HIGH | Multiple UNC Provider Kernel Driver Elevation of Privilege Vulnerability |
| CVE-2026-20967 | 8.8 HIGH | System Center Operations Manager (SCOM) Elevation of Privilege Vulnerability |
| CVE-2026-26115 | 8.8 HIGH | SQL Server Elevation of Privilege Vulnerability |
| CVE-2026-26116 | 8.8 HIGH | SQL Server Elevation of Privilege Vulnerability |
| CVE-2026-26109 | 8.4 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2026-26110 | 8.4 HIGH | Microsoft Office Remote Code Execution Vulnerability |
| CVE-2026-26113 | 8.4 HIGH | Microsoft Office Remote Code Execution Vulnerability |
| CVE-2026-26105 | 8.1 HIGH | Microsoft SharePoint Server Spoofing Vulnerability |
| CVE-2026-26148 | 8.1 HIGH | Microsoft Azure AD SSH Login extension for Linux Elevation of Privilege Vulnerability |
| CVE-2026-26111 | 8.0 HIGH | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-25172 | 8.0 HIGH | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-25173 | 8.0 HIGH | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-25189 | 7.8 HIGH | Windows DWM Core Library Elevation of Privilege Vulnerability |
Showing top 20 of 78 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-21262
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