Microsoft Windows Information Disclosure Vulnerability
Microsoft — Windows 10 Version 1607
Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.
5.5
5.1%
Vector breakdown
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Published
- Jan 13, 2026
- Modified
- Jul 30, 2026
- Added to KEV
- Jan 13, 2026
- Federal patch due
- Feb 3, 2026
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.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
5 foundWeaponization
Public repositories whose name or description references CVE-2026-20805, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- fevar54/CVE-2026-20805-POC★ 7
PoC de CVE-2026-20805: divulgacion de informacion en Desktop Window Manager (dwm.exe) de Windows.
updated Aug 25, 2026
- Uzair-Baig0900/CVE-2026-20805-PoC★ 2
The PoC of information disclosure in Microsoft Desktop Windows Management.
updated May 6, 2026
- SimoesCTT/-SCTT-2026-33-0002-DWM-Visual-Field-Singularity★ 1
### 📡 Theoretical Classification **ID:** SCTT-2026-33-0002 **Researcher:** Americo Simoes (SimoesCTT) **Physics:** Theorem 4.2 - Turbulent Phase Transition (TPT) **Constant:** α = 0.0302011 **Target:** Desktop Window Manager (dwm.exe) / Windows Graphics Component **Obsoletes:** CVE-2026-20805 & CVE-2026-20871 (Visual-Latch Patches)
updated Aug 3, 2026
- mrk336/Inside-CVE-2026-20805-How-a-Windows-DWM-Flaw-Exposed-Sensitive-Data★ 0
CVE‑2026‑20805: A Windows Desktop Window Manager flaw causing local information disclosure. Requires low privileges, no user interaction. Rated CVSS 5.5 (Medium). Actively exploited and listed in CISA KEV; patch released January 2026.
updated Jan 28, 2026
- SimoesCTT/SCTT-2026-33-0002-DWM-Visual-Field-Singularity★ 0
Microsoft just patched CVE-2026-20805 and CVE-2026-20871 in January 2026 to stop "Information Disclosure" and "Use-After-Free" bugs in DWM. They think they've secured the "Visual Boundary." We are about to prove that a 33-layer resonance can turn those visual buffers into a liquid pipeline for SCTT-2026-33-0002.
updated Jan 31, 2026
References
Frequently asked questions
What is CVE-2026-20805?
Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.
How severe is CVE-2026-20805?
CVE-2026-20805 has a CVSS base score of 5.5 out of 10 (CVSS 3.1).
Is CVE-2026-20805 actively exploited in the wild?
Yes. CVE-2026-20805 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jan 13, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2026-20805?
5.1% - meaning FIRST.org's EPSS model estimates a 5.1% probability this vulnerability will be exploited in the wild within 30 days (92% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2026-20805?
We found 5 public GitHub repositories referencing CVE-2026-20805, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2026-20805?
CVE-2026-20805 is classified under CWE-200 (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor).
Cross-checked against
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