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CVE-2026-94520— Microsoft SQL Server Denial of Service Vulnerability

Quick assessment

Affected
Microsoft Microsoft SQL Server 2017 (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.

在 SQL Server 中，由于使用了外部控制的格式字符串，经过身份验证的攻击者可以通过网络实施拒绝服务攻击。

CVSS 4.9 · Medium EPSS 0.61% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

VendorProduct Version RangeStatus
Microsoft Microsoft SQL Server 2017 (GDR) 14.0.0< 14.0.2140.2 affected
Microsoft Microsoft SQL Server 2017 for x64-based Systems (CU31) 14.0.3006.16< 14.0.3560.2 affected
Microsoft Microsoft SQL Server 2019 (GDR) 15.0.0< 15.0.2200.2 affected
Microsoft Microsoft SQL Server 2019 for x64-based Systems (CU32) 15.0.4003.23< 15.0.4500.2 affected
Microsoft Microsoft SQL Server 2022 (GDR) 16.0.0< 16.0.1210.3 affected
Microsoft Microsoft SQL Server 2022 for x64-based Systems (CU27) 16.0.4003.1< 16.0.4305.5 affected
Microsoft Microsoft SQL Server 2025 for x64-based Systems (CU9) 17.0.4006.2< 17.0.5015.4 affected
Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1050.2< 17.0.1145.4 affected
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I. Basic Information for CVE-2026-94520

Vulnerability Information
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Vulnerability Title
Microsoft SQL Server Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Use of externally-controlled format string in SQL Server allows an authorized attacker to deny service over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部控制的格式字符串
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft SQL Server 2017 (GDR) 14.0.0 ~ 14.0.2140.2 -
Microsoft Microsoft SQL Server 2017 for x64-based Systems (CU31) 14.0.3006.16 ~ 14.0.3560.2 -
Microsoft Microsoft SQL Server 2019 (GDR) 15.0.0 ~ 15.0.2200.2 -
Microsoft Microsoft SQL Server 2019 for x64-based Systems (CU32) 15.0.4003.23 ~ 15.0.4500.2 -
Microsoft Microsoft SQL Server 2022 (GDR) 16.0.0 ~ 16.0.1210.3 -
Microsoft Microsoft SQL Server 2022 for x64-based Systems (CU27) 16.0.4003.1 ~ 16.0.4305.5 -
Microsoft Microsoft SQL Server 2025 for x64-based Systems (CU9) 17.0.4006.2 ~ 17.0.5015.4 -
Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1050.2 ~ 17.0.1145.4 -

II. Public POCs for CVE-2026-94520

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III. Intelligence Information for CVE-2026-94520

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Vendor Advisories for CVE-2026-94520 (1)

Same Patch Batch · Microsoft · 2026-10-13 · 1407 CVEs total

CVE-2026-85806 9.8 CRITICAL Network Policy Server (NPS) Remote Code Execution Vulnerability
CVE-2026-96924 9.8 CRITICAL Windows OLE Remote Code Execution Vulnerability
CVE-2026-96934 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-88178 9.8 CRITICAL Microsoft Office PowerPoint Remote Code Execution Vulnerability
CVE-2026-70096 9.8 CRITICAL Windows Rich Text Edit Control Remote Code Execution Vulnerability
CVE-2026-88156 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-70300 9.8 CRITICAL Microsoft Office Word Remote Code Execution Vulnerability
CVE-2026-70291 9.8 CRITICAL Microsoft Office Outlook Remote Code Execution Vulnerability
CVE-2026-100202 9.8 CRITICAL Windows Message Queuing Queue Manager Remote Code Execution Vulnerability
CVE-2026-100219 9.8 CRITICAL Microsoft QUIC Remote Code Execution Vulnerability
CVE-2026-70147 9.8 CRITICAL Microsoft PostScript Printer Driver Remote Code Execution Vulnerability
CVE-2026-85792 9.8 CRITICAL Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2026-70024 9.8 CRITICAL Windows Internet Information Services Remote Code Execution Vulnerability
CVE-2026-100222 9.8 CRITICAL Network Policy Server (NPS) Remote Code Execution Vulnerability
CVE-2026-97815 9.8 CRITICAL Windows Error Reporting Remote Code Execution Vulnerability
CVE-2026-105010 9.8 CRITICAL Microsoft Windows Search Component Elevation of Privilege Vulnerability
CVE-2026-97805 9.8 CRITICAL Windows Partition Management Driver Remote Code Execution Vulnerability
CVE-2026-96113 9.8 CRITICAL Windows Domain Name Service Remote Code Execution Vulnerability
CVE-2026-85928 9.8 CRITICAL Windows Volume Manager Extension Driver Remote Code Execution Vulnerability
CVE-2026-97814 9.8 CRITICAL Windows Text Shaping Remote Code Execution Vulnerability

Showing top 20 of 1407 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft SQL Server 2017 (GDR)
Same vendor: Microsoft
Same weakness: CWE-134

V. Comments for CVE-2026-94520

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