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CVE-2026-20803— Microsoft SQL Server Elevation of Privilege Vulnerability

CVSS 7.2 · High EPSS 0.06% · P19
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I. Basic Information for CVE-2026-20803

Vulnerability Information
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Vulnerability Title
Microsoft SQL Server Elevation of Privilege Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
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 2022 for x64-based Systems (GDR),Microsoft SQL Server 2025 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

VendorProductAffected VersionsCPESubscribe
MicrosoftMicrosoft SQL Server 2022 (GDR) 16.0.0 ~ 16.0.1165.1 -
MicrosoftMicrosoft SQL Server 2022 for x64-based Systems (CU 22) 16.0.0.0 ~ 16.0.4230.2 -
MicrosoftMicrosoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1050.2 ~ 17.0.1050.2 -

II. Public POCs for CVE-2026-20803

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III. Intelligence Information for CVE-2026-20803

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Same Patch Batch · Microsoft · 2026-01-13 · 112 CVEs total

CVE-2026-209639.8 CRITICALMicrosoft SharePoint Remote Code Execution Vulnerability
CVE-2026-209478.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-208688.8 HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-209528.4 HIGHMicrosoft Office Remote Code Execution Vulnerability
CVE-2026-209448.4 HIGHMicrosoft Word Remote Code Execution Vulnerability
CVE-2026-209538.4 HIGHMicrosoft Office Remote Code Execution Vulnerability
CVE-2026-208568.1 HIGHWindows Server Update Service (WSUS) Remote Code Execution Vulnerability
CVE-2026-209318.0 HIGHWindows Telephony Service Elevation of Privilege Vulnerability
CVE-2026-208577.8 HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVE-2026-209247.8 HIGHWindows Management Services Elevation of Privilege Vulnerability
CVE-2026-209227.8 HIGHWindows NTFS Remote Code Execution Vulnerability
CVE-2026-208437.8 HIGHWindows Routing and Remote Access Service (RRAS) Elevation of Privilege Vulnerability
CVE-2026-209207.8 HIGHWin32k Elevation of Privilege Vulnerability
CVE-2026-208377.8 HIGHWindows Media Remote Code Execution Vulnerability
CVE-2026-212247.8 HIGHAzure Connected Machine Agent Elevation of Privilege Vulnerability
CVE-2026-208407.8 HIGHWindows NTFS Remote Code Execution Vulnerability
CVE-2026-209567.8 HIGHMicrosoft Excel Remote Code Execution Vulnerability
CVE-2026-208777.8 HIGHWindows Management Services Elevation of Privilege Vulnerability
CVE-2026-209517.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-209467.8 HIGHMicrosoft Excel Remote Code Execution Vulnerability

Showing top 20 of 112 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Microsoft SQL Server 2022 (GDR)
Same vendor: Microsoft
Same weakness: CWE-306

V. Comments for CVE-2026-20803

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