CVE-2026-20827 Details
Description
Exposure of sensitive information to an unauthorized actor in Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attacker to disclose information locally.
A vulnerability allowing sensitive information exposure has been identified in the Tablet Windows User Interface (TWINUI) Subsystem. This issue allows an authorized attacker to locally disclose information, specifically the local memory address, on affected systems.
Users can apply the security update provided by Microsoft to address this vulnerability. Security update KB5073724 is available for various Windows 10 versions, while KB5073457 is available for Windows Server 2022. For Windows 11, security update KB5074109 can be applied. Instructions for downloading these security updates are available on the Microsoft Update Catalog.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20827 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 1607 | < 10.0.14393.8783 |
CPE
Remediation
| |
| microsoft windows 10 1809 | < 10.0.17763.8276 |
CPE
Remediation
| |
| microsoft windows 10 21h2 | < 10.0.19044.6809 |
CPE
Remediation
| |
| microsoft windows 10 22h2 | < 10.0.19045.6809 |
CPE
Remediation
| |
| microsoft windows 11 23h2 | < 10.0.22631.6491 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.7623 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.7623 |
CPE
Remediation
| |
| microsoft windows server 2016 | < 10.0.14393.8783 |
CPE
Remediation
| |
| microsoft windows server 2019 | < 10.0.17763.8276 |
CPE
Remediation
| |
| microsoft windows server 2022 | < 10.0.20348.4648 |
CPE
Remediation
| |
| microsoft windows server 2022 23h2 | < 10.0.25398.2092 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.32230 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 15, 2026 | Initial Analysis | [email protected] |
| Jan 13, 2026 | New CVE Received | [email protected] |