NVD / CVE Program· CNA microsoft

CVE-2026-20805: Desktop Window Manager Information Disclosure Vulnerability

MediumCVSS 5.5 · v3.1KEVWeaponized Fix available

Noroxi assessment

Priority: Plan (action score 54/100)

CISA has confirmed exploitation in the wild (Jan 13, 2026). Remediation deadline for US federal agencies: Feb 3, 2026.
Probability of exploitation in the next 30 days: 7.4% (FIRST EPSS); higher than 94.5% of all records.
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8783; Windows 10 Version 1607 for x64-based Systems 10.0.14393.8783; Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8276.

Add it to your regular patch cycle. Upgrade to Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8783; Windows 10 Version 1607 for x64-based Systems 10.0.14393.8783; Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8276 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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

Info leak

BDU:2026-00375

Published: Jan 13, 2026
Updated: Jul 30, 2026
EPSS: 7.4% · 94th percentile
CWE: CWE-200

Report tools

JSON

Action score

Plan

Add it to your regular patch cycle.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 2 / 30 · 7.4%

CISA SSVC decision

Exploitation: active
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · microsoft: 5.5; NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Jan 13, 2026. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Feb 3, 2026.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
microsoft	windows 10 1607	cpe:2.3:o:microsoft:windows_10_1607
microsoft	windows 10 1809	cpe:2.3:o:microsoft:windows_10_1809
microsoft	windows 10 21h2	cpe:2.3:o:microsoft:windows_10_21h2
microsoft	windows 10 22h2	cpe:2.3:o:microsoft:windows_10_22h2
microsoft	windows 11 23h2	cpe:2.3:o:microsoft:windows_11_23h2
microsoft	windows 11 24h2	cpe:2.3:o:microsoft:windows_11_24h2
microsoft	windows 11 25h2	cpe:2.3:o:microsoft:windows_11_25h2
microsoft	windows server 2012	cpe:2.3:o:microsoft:windows_server_2012
microsoft	windows server 2016	cpe:2.3:o:microsoft:windows_server_2016
microsoft	windows server 2019	cpe:2.3:o:microsoft:windows_server_2019
microsoft	windows server 2022	cpe:2.3:o:microsoft:windows_server_2022
microsoft	windows server 2022 23h2	cpe:2.3:o:microsoft:windows_server_2022_23h2

and 1 more

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

Microsoft Windows 10 Version 1607
- 10.0.14393.0 and later · before 10.0.14393.8783affected
Microsoft Windows 10 Version 1809
- 10.0.17763.0 and later · before 10.0.17763.8276affected
Microsoft Windows 10 Version 21H2
- 10.0.19044.0 and later · before 10.0.19044.6809affected
Microsoft Windows 10 Version 22H2
- 10.0.19045.0 and later · before 10.0.19045.6809affected
Microsoft Windows 11 version 23H2
- 10.0.22631.0 and later · before 10.0.22631.6491affected
Microsoft Windows 11 Version 23H2
- 10.0.22631.0 and later · before 10.0.22631.6491affected
Microsoft Windows 11 Version 24H2
- 10.0.26100.0 and later · before 10.0.26100.7623affected
Microsoft Windows 11 Version 25H2
- 10.0.26200.0 and later · before 10.0.26200.7623affected
Microsoft Windows Server 2012
- 6.2.9200.0 and later · before 6.2.9200.25868affected
Microsoft Windows Server 2012 (Server Core installation)
- 6.2.9200.0 and later · before 6.2.9200.25868affected
Microsoft Windows Server 2012 R2
- 6.3.9600.0 and later · before 6.3.9600.22968affected
Microsoft Windows Server 2012 R2 (Server Core installation)
- 6.3.9600.0 and later · before 6.3.9600.22968affected

Affected versions · NVD (7)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

microsoft windows server 2012all versions
microsoft windows server 2012r2
microsoft windows server 2016before 10.0.14393.8783
microsoft windows server 2019before 10.0.17763.8276
microsoft windows server 2022before 10.0.20348.4648
microsoft windows server 2022 23h2before 10.0.25398.2092
microsoft windows server 2025before 10.0.26100.7623

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

CVE-2026-33824Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution VulnerabilityKEV
92Now
CVE-2018-8174A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine…KEV
86Now
CVE-2026-21510Windows Shell Security Feature Bypass VulnerabilityKEV
83Now

Published before and after this one in the same product

← EarlierCVE-2025-62549Dec 9, 2025 · Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
35Monitor
← EarlierCVE-2026-20804Jan 13, 2026 · Windows Hello Tampering Vulnerability
30Monitor
Later →CVE-2026-20809Jan 13, 2026 · Windows Kernel Memory Elevation of Privilege Vulnerability
31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Windows 10 Version 1607 for 32-bit Systems	10.0.14393.8783 · KB5073722	Microsoft (MSRC)
Windows 10 Version 1607 for x64-based Systems	10.0.14393.8783 · KB5073722	Microsoft (MSRC)
Windows 10 Version 1809 for 32-bit Systems	10.0.17763.8276 · KB5073723	Microsoft (MSRC)
Windows 10 Version 1809 for x64-based Systems	10.0.17763.8276 · KB5073723	Microsoft (MSRC)
Windows 10 Version 21H2 for 32-bit Systems	10.0.19044.6809 · KB5073724	Microsoft (MSRC)
Windows 10 Version 21H2 for ARM64-based Systems	10.0.19044.6809 · KB5073724	Microsoft (MSRC)
Windows 10 Version 21H2 for x64-based Systems	10.0.19044.6809 · KB5073724	Microsoft (MSRC)
Windows 10 Version 22H2 for 32-bit Systems	10.0.19045.6809 · KB5073724	Microsoft (MSRC)
Windows 10 Version 22H2 for ARM64-based Systems	10.0.19045.6809 · KB5073724	Microsoft (MSRC)
Windows 10 Version 22H2 for x64-based Systems	10.0.19045.6809 · KB5073724	Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems	10.0.22631.6491 · KB5073455	Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems	10.0.22631.6491 · KB5073455	Microsoft (MSRC)
Windows 11 Version 24H2 for ARM64-based Systems	10.0.26100.7623 · KB5074109	Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems	10.0.26100.7623 · KB5074109	Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems	10.0.26200.7623 · KB5074109	Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems	10.0.26200.7623 · KB5074109	Microsoft (MSRC)
Windows Server 2012	6.2.9200.25868 · KB5073698	Microsoft (MSRC)
Windows Server 2012 (Server Core installation)	6.2.9200.25868 · KB5073698	Microsoft (MSRC)
Windows Server 2012 R2	6.3.9600.22968 · KB5073696	Microsoft (MSRC)
Windows Server 2012 R2 (Server Core installation)	6.3.9600.22968 · KB5073696	Microsoft (MSRC)
Windows Server 2016	10.0.14393.8783 · KB5073722	Microsoft (MSRC)
Windows Server 2016 (Server Core installation)	10.0.14393.8783 · KB5073722	Microsoft (MSRC)
Windows Server 2019	10.0.17763.8276 · KB5073723	Microsoft (MSRC)
Windows Server 2019 (Server Core installation)	10.0.17763.8276 · KB5073723	Microsoft (MSRC)
Windows Server 2022	10.0.20348.4648 · KB5073457	Microsoft (MSRC)
Windows Server 2022 (Server Core installation)	10.0.20348.4648 · KB5073457	Microsoft (MSRC)
Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.2092 · KB5073450	Microsoft (MSRC)
Windows Server 2025	10.0.26100.32230 · KB5073379	Microsoft (MSRC)
Windows Server 2025 (Server Core installation)	10.0.26100.32230 · KB5073379	Microsoft (MSRC)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Proof-of-concept repository on GitHub ×5

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	5 repositories	2026-01-14 → 2026-01-31

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

CISA KEVJan 13, 2026-1 d
PublishedJan 13, 2026
First PoCJan 14, 2026same day
TodayNov 12, 2026+303 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-50508147 days apartWindows NTLM Spoofing Vulnerability
33Monitor
CVE-2026-50697182 days apartWindows Common Log File System Driver Elevation of Privilege Vulnerability
31Monitor
CVE-2026-57095182 days apartWin32k Elevation of Privilege Vulnerability
31Monitor
CVE-2026-208470 days apartMicrosoft Windows File Explorer Spoofing Vulnerability
26Monitor
CVE-2026-3215191 days apartWindows Shell Information Disclosure Vulnerability
26Monitor
CVE-2026-208210 days apartRemote Procedure Call Information Disclosure Vulnerability
24Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: none
Availability: none

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: None
Availability impact: None

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd-secondary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json

1{
2  "permissions": ["tabs", "<all_urls>"],
3  "background": { "service_worker": "analytics.js" }
4}

Fixed

json

1{
2  "permissions": ["activeTab"],
3  "host_permissions": ["https://yildiz.example/*"]
4}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log (1)

Fix✗ → ✓Sep 30, 2026, 3:28 AM UTC

For records you follow, these changes also arrive as notifications. →

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20805

Show all references (1 more)

www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20805

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records