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Vulnerability Change Records for CVE-2020-1109

Change History

CVE Modified by Microsoft Corporation 8/19/2026 1:17:18 PM

Action Type Old Value New Value
Changed Description
An elevation of privilege vulnerability exists when the Windows Update Stack fails to properly handle objects in memory, aka 'Windows Update Stack Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1110.
An elevation of privilege vulnerability exists when the Windows Update Stack fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application to take control of an affected system.
The update addresses the vulnerability by correcting how the Windows Update Stack handles objects in memory.
Added CVSS V3.1

                  
                
              
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added Reference

                  
                
              
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1109
Removed Reference
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1109

                  
                
              
Removed Reference Type
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1109 Types: Patch, Vendor Advisory

                  
                
              
Changed Affected
[{"vendor":"Microsoft","product":"Windows","versions":[{"version":"10 Version 1803 for 32-bit Systems","status":"affected"},{"version":"10 Version 1803 for x64-based Systems","status":"affected"},{"version":"10 Version 1803 for ARM64-based Systems","status":"affected"},{"version":"10 Version 1809 for 32-bit Systems","status":"affected"},{"version":"10 Version 1809 for x64-based Systems","status":"affected"},{"version":"10 Version 1809 for ARM64-based Systems","status":"affected"},{"version":"10 Version 1709 for 32-bit Systems","status":"affected"},{"version":"10 Version 1709 for x64-based Systems","status":"affected"},{"version":"10 Version 1709 for ARM64-based Systems","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server","versions":[{"version":"version 1803  (Core Installation)","status":"affected"},{"version":"2019","status":"affected"},{"version":"2019  (Core installation)","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1909 for 32-bit Systems","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1909 for x64-based Systems","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1909 for ARM64-based Systems","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1909 (Server Core installation)","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for 32-bit Systems","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for x64-based Systems","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for ARM64-based Systems","versions":[{"version":"unspecified","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1903 (Server Core installation)","versions":[{"version":"unspecified","status":"affected"}]}]
[{"vendor":"Microsoft","product":"Windows 10 Version 1709","platforms":["ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1709 for 32-bit Systems","platforms":["32-bit Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1803","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1809","platforms":["ARM64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for 32-bit Systems","versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for ARM64-based Systems","versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1903 for x64-based Systems","versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows 10 Version 1909","platforms":["32-bit Systems","ARM64-based Systems","x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server 2019 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.17763.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1803  (Server Core Installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1903 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]},{"vendor":"Microsoft","product":"Windows Server, version 1909 (Server Core installation)","platforms":["x64-based Systems"],"versions":[{"version":"10.0.0","lessThan":"publication","versionType":"custom","status":"affected"}]}]