Skip to content
Fencer Vulns
medium 5.5

CVE-2026-20805 kev in the critical feed json

Desktop Window Manager Information Disclosure Vulnerability

published 2026-01-13 9 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-2073

cvss
5.5
version 3.1, CNA
cisa kev
Exploited
added 2026-01-13
epss
7.5%
EPSS 7.5% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

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

Patch / fix

cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  • Microsoft Windows 10 Version 1607 10.0.14393.8783
  • Microsoft Windows 10 Version 1809 10.0.17763.8276
  • Microsoft Windows 10 Version 21H2 10.0.19044.6809
  • Microsoft Windows 10 Version 22H2 10.0.19045.6809
  • Microsoft Windows 11 version 23H2 10.0.22631.6491
  • Microsoft Windows 11 Version 24H2 10.0.26100.7623
  • Microsoft Windows 11 Version 25H2 10.0.26200.7623
  • Microsoft Windows Server 2012 6.2.9200.25868
  • Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.25868
  • Microsoft Windows Server 2012 R2 6.3.9600.22968
  • Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.22968
  • Microsoft Windows Server 2016 10.0.14393.8783
  • Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.8783
  • Microsoft Windows Server 2019 10.0.17763.8276
  • Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.8276
  • Microsoft Windows Server 2022 10.0.20348.4648
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2092
  • Microsoft Windows Server 2025 10.0.26100.32230
  • Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.32230

Timeline

  1. 0-day patched (Project Zero)
  2. Added to CISA KEV
  3. Published
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
9 mo ago
Patch by
2026-02-03 (9 mo ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor, product
Microsoft, Windows
CISA name
Microsoft Windows Information Disclosure Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2026-01-13
Details
project zero tracker

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

7.46% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Microsoft Windows 10 Version 1607
  • Microsoft Windows 10 Version 1809
  • Microsoft Windows 10 Version 21H2
  • Microsoft Windows 10 Version 22H2
  • Microsoft Windows 11 version 23H2
  • Microsoft Windows 11 Version 24H2
  • Microsoft Windows 11 Version 25H2
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 (Server Core installation)
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2012 R2 (Server Core installation)
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2016 (Server Core installation)
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2019 (Server Core installation)
  • Microsoft Windows Server 2022
  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
  • Microsoft Windows Server 2025
  • Microsoft Windows Server 2025 (Server Core installation)

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.