All vulnerabilities
CVE-2026-20805

Microsoft Windows Information Disclosure Vulnerability

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
5.5Medium
ExploitationExploited in the wildAdded to KEV 13 Jan 2026CISA KEV
Exploit odds (EPSS)7.46%Chance of exploitation activity in the next 30 days, higher than 94% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.0.14393.8783Also 10.0.17763.8276, 10.0.19044.6809 and 9 moreCVE List
Federal deadline3 Feb 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 10.0.14393.8783Windows 10 Version 1607CVE List
  • 10.0.17763.8276Windows 10 Version 1809CVE List
  • 10.0.19044.6809Windows 10 Version 21H2CVE List
  • 10.0.19045.6809Windows 10 Version 22H2CVE List
  • 10.0.22631.6491Windows 11 version 23H2CVE List
  • 10.0.22631.6491Windows 11 Version 23H2CVE List
Show all 20 fixed versions
  • 10.0.26100.7623Windows 11 Version 24H2CVE List
  • 10.0.26200.7623Windows 11 Version 25H2CVE List
  • 6.2.9200.25868Windows Server 2012CVE List
  • 6.2.9200.25868Windows Server 2012 (Server Core installation)CVE List
  • 6.3.9600.22968Windows Server 2012 R2CVE List
  • 6.3.9600.22968Windows Server 2012 R2 (Server Core installation)CVE List
  • 10.0.14393.8783Windows Server 2016CVE List
  • 10.0.14393.8783Windows Server 2016 (Server Core installation)CVE List
  • 10.0.17763.8276Windows Server 2019CVE List
  • 10.0.17763.8276Windows Server 2019 (Server Core installation)CVE List
  • 10.0.20348.4648Windows Server 2022CVE List
  • 10.0.25398.2092Windows Server 2022, 23H2 Edition (Server Core installation)CVE List
  • 10.0.26100.32230Windows Server 2025CVE List
  • 10.0.26100.32230Windows Server 2025 (Server Core installation)CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 13 Jan 2026Added to CISA KEVCISA KEV
  2. 13 Jan 2026, 17:56 UTCPublishedCVE List

Description

Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally.

Text from CVE List

Affected versions 20

  • Windows 10 Version 1607affected: 10.0.14393.0 before 10.0.14393.8783CVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before 10.0.17763.8276CVE List
  • Windows 10 Version 21H2affected: 10.0.19044.0 before 10.0.19044.6809CVE List
  • Windows 10 Version 22H2affected: 10.0.19045.0 before 10.0.19045.6809CVE List
  • Windows 11 version 23H2affected: 10.0.22631.0 before 10.0.22631.6491CVE List
  • Windows 11 Version 23H2affected: 10.0.22631.0 before 10.0.22631.6491CVE List
  • Windows 11 Version 24H2affected: 10.0.26100.0 before 10.0.26100.7623CVE List
  • Windows 11 Version 25H2affected: 10.0.26200.0 before 10.0.26200.7623CVE List
  • Windows Server 2012affected: 6.2.9200.0 before 6.2.9200.25868CVE List
  • Windows Server 2012 (Server Core installation)affected: 6.2.9200.0 before 6.2.9200.25868CVE List
  • Windows Server 2012 R2affected: 6.3.9600.0 before 6.3.9600.22968CVE List
  • Windows Server 2012 R2 (Server Core installation)affected: 6.3.9600.0 before 6.3.9600.22968CVE List
  • Windows Server 2016affected: 10.0.14393.0 before 10.0.14393.8783CVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before 10.0.14393.8783CVE List
  • Windows Server 2019affected: 10.0.17763.0 before 10.0.17763.8276CVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before 10.0.17763.8276CVE List
  • Windows Server 2022affected: 10.0.20348.0 before 10.0.20348.4648CVE List
  • Windows Server 2022, 23H2 Edition (Server Core installation)affected: 10.0.25398.0 before 10.0.25398.2092CVE List
  • Windows Server 2025affected: 10.0.26100.0 before 10.0.26100.32230CVE List
  • Windows Server 2025 (Server Core installation)affected: 10.0.26100.0 before 10.0.26100.32230CVE List

References 4