CVE-2021-28326: Windows AppX Deployment Server Denial of Service Vulnerability

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Apr

Released

2021-04-13

EPSS Score

1.06% (percentile: 77.6%)

Affected Products (26)

Windows

• Windows 10 Version 1803 for 32-bit Systems
• Windows 10 Version 1803 for x64-based Systems
• Windows 10 Version 1803 for ARM64-based Systems
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 10 Version 1809 for ARM64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 1909 for 32-bit Systems
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 1909 for ARM64-based Systems
• Windows Server, version 1909 (Server Core installation)
• Windows 10 Version 2004 for 32-bit Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows 10 Version 2004 for x64-based Systems
• Windows Server, version 2004 (Server Core installation)
• Windows 10 Version 20H2 for x64-based Systems
• Windows 10 Version 20H2 for 32-bit Systems
• Windows 10 Version 20H2 for ARM64-based Systems
• Windows Server, version 20H2 (Server Core Installation)
• Windows 10 for 32-bit Systems
• Windows 10 for x64-based Systems
• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)

Security Updates (6)

• 5001339
• 5001342
• 5001337
• 5001330
• 5001340
• 5001347

Acknowledgments

Abdelhamid Naceri (halov) working with <a href="https://zerodayinitiative.com">Trend Micro's Zero Day Initiative</a>

Revision History

• 2021-04-13: Information published.