CVE-2026-66819— Microsoft SQL Server Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Microsoft SQL Server 2017 (CU 31)
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.
SQL Server 中 SQL 命令中特殊字符（如单引号、分号等）未正确转义或过滤，导致 SQL 注入漏洞，使已认证的攻击者能够通过网络提升权限。
Possible ATT&CK Techniques 1 AI
T1188Affected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0< 14.0.3550.4 |
affected |
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0< 14.0.2130.4 |
affected |
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0< 15.0.4490.9 |
affected |
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0< 15.0.2190.7 |
affected |
| Microsoft | Microsoft SQL Server 2022 (CU 26) | 16.0.0.0< 16.0.4275.2 |
affected |
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0< 16.0.1200.5 |
affected |
| Microsoft | Microsoft SQL Server 2025 (CU8) | 17.0.0.0< 17.0.4085.5 |
affected |
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | 17.0.1050.2< 17.0.1135.8 |
affected |
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I. Basic Information for CVE-2026-66819
Vulnerability Information
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Vulnerability Title
Microsoft SQL Server Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of special elements used in an sql command ('sql injection') 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
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0 ~ 14.0.3550.4 | - |
|
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0 ~ 14.0.2130.4 | - |
|
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0 ~ 15.0.4490.9 | - |
|
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0 ~ 15.0.2190.7 | - |
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) | 16.0.0.0 ~ 16.0.4275.2 | - |
|
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0 ~ 16.0.1200.5 | - |
|
| Microsoft | Microsoft SQL Server 2025 (CU8) | 17.0.0.0 ~ 17.0.4085.5 | - |
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | 17.0.1050.2 ~ 17.0.1135.8 | - |
|
II. Public POCs for CVE-2026-66819
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-66819 (1)
Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total
| CVE-2026-83941 | 9.9 CRITICAL | Entra ID Elevation of Privilege Vulnerability |
| CVE-2026-69586 | 9.8 CRITICAL | Microsoft Windows PDF Remote Code Execution Vulnerability |
| CVE-2026-69463 | 9.8 CRITICAL | Windows NTFS Remote Code Execution Vulnerability |
| CVE-2026-73025 | 9.8 CRITICAL | Windows iSCSI Security Feature Bypass Vulnerability |
| CVE-2026-73010 | 9.8 CRITICAL | Microsoft Failover Cluster Remote Code Execution Vulnerability |
| CVE-2026-69819 | 9.8 CRITICAL | RPC Runtime Library Remote Code Execution Vulnerability |
| CVE-2026-70296 | 9.8 CRITICAL | Windows Imaging Component Remote Code Execution Vulnerability |
| CVE-2026-69715 | 9.8 CRITICAL | Windows Direct Show Remote Code Execution Vulnerability |
| CVE-2026-73009 | 9.8 CRITICAL | Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability |
| CVE-2026-78445 | 9.8 CRITICAL | Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability |
| CVE-2026-68839 | 9.8 CRITICAL | Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability |
| CVE-2026-69590 | 9.8 CRITICAL | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-69525 | 9.8 CRITICAL | Remote Desktop Services Remote Code Execution Vulnerability |
| CVE-2026-69768 | 9.8 CRITICAL | Windows RNDIS Remote Code Execution Vulnerability |
| CVE-2026-69491 | 9.8 CRITICAL | Microsoft DirectMusic Remote Code Execution Vulnerability |
| CVE-2026-69431 | 9.8 CRITICAL | Telnet Client Remote Code Execution Vulnerability |
| CVE-2026-72979 | 9.8 CRITICAL | Windows DHCP Server Remote Code Execution Vulnerability |
| CVE-2026-69824 | 9.8 CRITICAL | Microsoft Standard XPS Remote Code Execution Vulnerability |
| CVE-2026-69408 | 9.8 CRITICAL | Microsoft Windows Media Foundation Remote Code Execution Vulnerability |
| CVE-2026-69276 | 9.8 CRITICAL | Microsoft UxTheme Library (uxtheme.dll) Remote Code Execution Vulnerability |
Showing top 20 of 966 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-66819
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