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CVE-2026-20805
MSR
Medium KEVConfirmedExploit available

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

CVSS
5.5
Medium
EPSS
0.03
p86
Published
2026-01-01
Updated
2026-01-13
Description

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

Tags · CWE
KEVInformation disclosure
CWE-200
CAPEC-13
CAPEC-22
CAPEC-59
CAPEC-60
CAPEC-79
CAPEC-116
CAPEC-169
CAPEC-224
CAPEC-285
CAPEC-287
CAPEC-290
CAPEC-291
CAPEC-292
CAPEC-293
CAPEC-294
CAPEC-295
CAPEC-296
CAPEC-297
CAPEC-298
CAPEC-299
CAPEC-300
CAPEC-301
CAPEC-302
CAPEC-303
CAPEC-304
CAPEC-305
CAPEC-306
CAPEC-307
CAPEC-308
CAPEC-309
CAPEC-310
CAPEC-312
CAPEC-313
CAPEC-317
CAPEC-318
CAPEC-319
CAPEC-320
CAPEC-321
CAPEC-322
CAPEC-323
CAPEC-324
CAPEC-325
CAPEC-326
CAPEC-327
CAPEC-328
CAPEC-329
CAPEC-330
CAPEC-472
CAPEC-497
CAPEC-508
CAPEC-573
CAPEC-574
CAPEC-575
CAPEC-576
CAPEC-577
CAPEC-616
CAPEC-643
CAPEC-646
CAPEC-651
Affected products
Windows_10_1607 < 10.0.14393.8783Windows_10_1809 < 10.0.17763.8276Windows_10_21h2 < 10.0.19044.6809Windows_10_22h2 < 10.0.19045.6809Windows_11_23h2 < 10.0.22631.6491Windows_11_24h2 < 10.0.26100.7623Windows_11_25h2 < 10.0.26200.7623Windows_server_2012Windows_server_2016 < 10.0.14393.8783Windows_server_2019 < 10.0.17763.8276Windows_server_2022 < 10.0.20348.4648Windows_server_2022_23h2 < 10.0.25398.2092Windows_server_2025 < 10.0.26100.7623
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Timeline
2026-01-01
Published
2026-01-13
Added to KEV
2026-01-13
Updated
CVSS 3.1 breakdown
Attack Vector
AV: L
Local (L)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: L
Low (L)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: N
None (N)
Availability Impact
A: N
None (N)
Exploit indicators
EPSS
0.030 · p86
Known exploited (KEV)
Yes
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-574 · CWE-200
└ via CAPEC-292 · CWE-200
└ via CAPEC-577 · CWE-200
└ via CAPEC-300 · CWE-200
└ via CAPEC-309 · CWE-200
└ via CAPEC-573 · CWE-200
└ via CAPEC-576 · CWE-200
└ via CAPEC-312 · CWE-200
└ via CAPEC-497 · CWE-200
└ via CAPEC-575 · CWE-200
└ via CAPEC-646 · CWE-200
└ via CAPEC-295 · CWE-200
└ via CAPEC-60 · CWE-200
└ via CAPEC-643 · CWE-200
└ via CAPEC-169 · CWE-200
└ via CAPEC-60 · CWE-200
└ via CAPEC-13 · CWE-200
└ via CAPEC-309 · CWE-200
└ via CAPEC-169 · CWE-200
└ via CAPEC-169 · CWE-200
└ via CAPEC-576 · CWE-200
Known exploits — Сканер-ВС
CVE-2026-20805
github-poc · https://github.com/mrk336/Inside-CVE-2026-20805-How-a-Windows-DWM-Flaw-Exposed-Sensitive-Data
Enterprise
Affected software
ProductVendorStatus
windows_10_1607*Exploited
windows_10_1809*Exploited
windows_10_21h2*Exploited
windows_10_22h2*Exploited
windows_11_23h2*Exploited
windows_11_24h2*Exploited
windows_11_25h2*Exploited
windows_server_2012*Exploited
windows_server_2016*Exploited
windows_server_2019*Exploited
windows_server_2022*Exploited
windows_server_2022_23h2*Exploited
windows_server_2025*Exploited
WindowsMicrosoftExploited
WindowsMicrosoftExploited
WindowsMicrosoftExploited
WindowsMicrosoftExploited
WindowsMicrosoftExploited
WindowsMicrosoftExploited
WindowsMicrosoftExploited