Intrusion PreventionMS.Windows.CVE-2026-20805.Information.Disclosure
Description
This indicates an attack attempt to exploit an Information Disclosure Vulnerability in Microsoft Windows.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted request. A remote attacker can exploit this to gain unauthorized access to sensitive information.
Affected Products
Microsoft Windows 10 Version 1809 for 32-bit Systems
Microsoft Windows 10 Version 1809 for x64-based Systems
Microsoft Windows Server 2019
Microsoft Windows Server 2019 (Server Core installation)
Microsoft Windows Server 2022
Microsoft Windows Server 2022 (Server Core installation)
Microsoft Windows 10 Version 21H2 for 32-bit Systems
Microsoft Windows 10 Version 21H2 for ARM64-based Systems
Microsoft Windows 10 Version 21H2 for x64-based Systems
Microsoft Windows 10 Version 22H2 for x64-based Systems
Microsoft Windows 10 Version 22H2 for ARM64-based Systems
Microsoft Windows 10 Version 22H2 for 32-bit Systems
Microsoft Windows Server 2025 (Server Core installation)
Microsoft Windows 11 Version 25H2 for ARM64-based Systems
Microsoft Windows 11 Version 25H2 for x64-based Systems
Microsoft Windows 11 Version 23H2 for ARM64-based Systems
Microsoft Windows 11 Version 23H2 for x64-based Systems
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
Microsoft Windows 11 Version 24H2 for ARM64-based Systems
Microsoft Windows 11 Version 24H2 for x64-based Systems
Microsoft Windows Server 2025
Microsoft Windows 10 Version 1607 for 32-bit Systems
Microsoft Windows 10 Version 1607 for x64-based Systems
Microsoft Windows Server 2016
Microsoft Windows Server 2016 (Server Core installation)
Microsoft Windows Server 2012
Microsoft Windows Server 2012 (Server Core installation)
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2012 R2 (Server Core installation)
Impact
Information Disclosure: attackers can gain sensitive information from vulnerable systems.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
https://msrc.microsoft.com/update-guide/vulnerability/cve-2026-20805
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
Version Updates
| ID | 59832 |
| Created | Dec 31, 2025 |
| Updated | Jan 20, 2026 |
| CVE ID | |
| Risk |
|
| Known Exploited | Yes |
| Exploit Prediction Score | 3.74% |
| Default Action | drop |
| Active | |
| Affected OS | Windows |
| Affected App | Other |
| Profile Type | Information Disclosure |