Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.
History

Fri, 14 Aug 2026 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*

Fri, 14 Aug 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Vendors & Products Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1

Fri, 14 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918
References
Metrics threat_severity

None

threat_severity

Important


Wed, 12 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.
Title Microsoft Windows Cross Device Service Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Weaknesses CWE-284
CPEs cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-08-11T17:05:36.051Z

Updated: 2026-08-17T15:30:19.564Z

Reserved: 2026-07-27T19:02:26.601Z

Link: CVE-2026-66804

cve-icon Vulnrichment

Updated: 2026-08-12T15:47:58.700Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-11T17:19:01.733

Modified: 2026-08-14T18:06:11.420

Link: CVE-2026-66804

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-13T13:30:00Z

Links: CVE-2026-66804 - Bugzilla