Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-20805

CVE-2026-20805MEDIUM

Microsoft Windows 10 Version 1607 — Desktop Window Manager Information Disclosure Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  N  N    5.5   .0720   94.1   YES

AFFECTED
  Product                                         Versions        Fixed
  Windows 10 Version 1607                         10.0.14393.0 –  —
  Windows 10 Version 1809                         10.0.17763.0 –  —
  Windows 10 Version 21H2                         10.0.19044.0 –  —
  Windows 10 Version 22H2                         10.0.19045.0 –  —
  Windows 11 version 23H2                         10.0.22631.0 –  —
  Windows 11 Version 23H2                         10.0.22631.0 –  —
  Windows 11 Version 24H2                         10.0.26100.0 –  —
  Windows 11 Version 25H2                         10.0.26200.0 –  —
  Windows Server 2012                             6.2.9200.0 –    —
  Windows Server 2012 (Server Core installation)  6.2.9200.0 –    —
  + 10 more

TIMELINE
  Dec 3   Reserved by microsoft
  Jan 13  Added to CISA KEV, remediation due 2026-02-03
  Jan 13  Published (CNA: microsoft)

CWE-200 · CNA: microsoft · CVSS v3.1 · 2 references · NVD status: Analyzed · KEV due February 3, 2026

Description

Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
December 3, 2025	Reserved	Reserved by microsoft
January 13, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-02-03
January 13, 2026	Published	Published (CNA: microsoft)

Affected

Affected products and packages — 20 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Windows 10 Version 1607	—	10.0.14393.0	—
Microsoft	Windows 10 Version 1809	—	10.0.17763.0	—
Microsoft	Windows 10 Version 21H2	—	10.0.19044.0	—
Microsoft	Windows 10 Version 22H2	—	10.0.19045.0	—
Microsoft	Windows 11 version 23H2	—	10.0.22631.0	—
Microsoft	Windows 11 Version 23H2	—	10.0.22631.0	—
Microsoft	Windows 11 Version 24H2	—	10.0.26100.0	—
Microsoft	Windows 11 Version 25H2	—	10.0.26200.0	—
Microsoft	Windows Server 2012	—	6.2.9200.0	—
Microsoft	Windows Server 2012 (Server Core installation)	—	6.2.9200.0	—
Microsoft	Windows Server 2012 R2	—	6.3.9600.0	—
Microsoft	Windows Server 2012 R2 (Server Core installation)	—	6.3.9600.0	—
Microsoft	Windows Server 2016	—	10.0.14393.0	—
Microsoft	Windows Server 2016 (Server Core installation)	—	10.0.14393.0	—
Microsoft	Windows Server 2019	—	10.0.17763.0	—
Microsoft	Windows Server 2019 (Server Core installation)	—	10.0.17763.0	—
Microsoft	Windows Server 2022	—	10.0.20348.0	—
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	—	10.0.25398.0	—
Microsoft	Windows Server 2025	—	10.0.26100.0	—
Microsoft	Windows Server 2025 (Server Core installation)	—	10.0.26100.0	—

Weaknesses

CWE-200

References (2)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20805 [Vendor Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20805 [US Government Resource]

Authoritative record: CVE-2026-20805 at cve.org

Vendors: microsoft

Weaknesses: CWE-200

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-20805 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.