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CVE-2026-62815— Microsoft QUIC Remote Code Execution Vulnerability

CVSS 9.8 · Critical EPSS 0.92% · P57

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

VendorProductVersion RangeStatus
MicrosoftWindows 11 version 23H210.0.22631.0< 10.0.22631.7517affected
MicrosoftWindows 11 Version 23H210.0.22631.0< 10.0.22631.7517affected
MicrosoftWindows 11 Version 24H210.0.26100.0< 10.0.26100.9168affected
MicrosoftWindows 11 Version 25H210.0.26200.0< 10.0.26200.9168affected
MicrosoftWindows 11 version 26H110.0.28000.0< 10.0.28000.2704affected
MicrosoftWindows Server 202210.0.20348.0< 10.0.20348.5499affected
MicrosoftWindows Server 202510.0.26100.0< 10.0.26100.33296affected
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0< 10.0.26100.33296affected
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I. Basic Information for CVE-2026-62815

Vulnerability Information
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Vulnerability Title
Microsoft QUIC Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows是美国Microsoft公司的一款操作系统。 Microsoft Windows 存在资源管理错误漏洞，该漏洞源于Microsoft QUIC释放后重用，可能导致未经授权的攻击者通过网络执行代码。
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
MicrosoftWindows 11 version 23H2 10.0.22631.0 ~ 10.0.22631.7517 -
MicrosoftWindows 11 Version 23H2 10.0.22631.0 ~ 10.0.22631.7517 -
MicrosoftWindows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.9168 -
MicrosoftWindows 11 Version 25H2 10.0.26200.0 ~ 10.0.26200.9168 -
MicrosoftWindows 11 version 26H1 10.0.28000.0 ~ 10.0.28000.2704 -
MicrosoftWindows Server 2022 10.0.20348.0 ~ 10.0.20348.5499 -
MicrosoftWindows Server 2025 10.0.26100.0 ~ 10.0.26100.33296 -
MicrosoftWindows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.33296 -

II. Public POCs for CVE-2026-62815

#POC DescriptionSource LinkShenlong Link
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III. Intelligence Information for CVE-2026-62815

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Vendor Advisories for CVE-2026-62815 (1)

Same Patch Batch · Microsoft · 2026-08-11 · 402 CVEs total

CVE-2026-628789.8 CRITICALWindows DNS Server Remote Code Execution Vulnerability
CVE-2026-628939.8 CRITICALWindows Deployment Services TFTP Server Remote Code Execution Vulnerability
CVE-2026-591249.8 CRITICALMicrosoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability
CVE-2026-657919.8 CRITICALWindows iSCSI Target Service Remote Code Execution Vulnerability
CVE-2026-505169.4 CRITICALMicrosoft Azure Kubernetes Service Elevation of Privilege Vulnerability
CVE-2026-703069.3 CRITICALMicrosoft Office SharePoint Spoofing Vulnerability
CVE-2026-656588.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-628178.8 HIGHWindows DNS Server Remote Code Execution Vulnerability
CVE-2026-657678.8 HIGHMicrosoft Teams for Android Spoofing Vulnerability
CVE-2026-627958.8 HIGHWindows LDAP - Lightweight Directory Access Protocol Remote Code Execution Vulnerability
CVE-2026-628168.8 HIGHWindows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
CVE-2026-628188.8 HIGHWindows Active Directory Certificate Services (AD CS) Remote Code Execution Vulnerability
CVE-2026-693208.8 HIGHVisual Studio Code Remote Code Execution Vulnerability
CVE-2026-628728.8 HIGH.NET Framework Elevation of Privilege Vulnerability
CVE-2026-629138.8 HIGHMicrosoft Exchange Server Remote Code Execution Vulnerability
CVE-2026-628248.8 HIGHRemote Desktop Client Remote Code Execution Vulnerability
CVE-2026-703248.8 HIGHMicrosoft SharePoint Elevation of Privilege Vulnerability
CVE-2026-703378.8 HIGHMicrosoft PowerShell Remote Code Execution Vulnerability
CVE-2026-571048.8 HIGHAzure Storage Explorer Elevation of Privilege Vulnerability
CVE-2026-668058.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability

Showing top 20 of 402 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 11 version 23H2
Same vendor: Microsoft
Same weakness: CWE-416

V. Comments for CVE-2026-62815

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