AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-66804

Microsoft Windows Cross Device Service: improper access control

Microsoft

CVE-2026-66804 · Published Aug 11, 2026 · updated Aug 14, 2026

High7.8
Fix: upgrade to 10.0.19045.7663 or later (4 fixed versions below)
Microsoft advisory

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

Affected versions

PackageAffectedFixed in
Windows 10 Version 22H2
Product
>= 10.0.19045.0, < 10.0.19045.766310.0.19045.7663
Windows 11 Version 24H2
Product
>= 10.0.26100.0, < 10.0.26100.916810.0.26100.9168
Windows 11 Version 25H2
Product
>= 10.0.26200.0, < 10.0.26200.916810.0.26200.9168
Windows 11 version 26H1
Product
>= 10.0.28000.0, < 10.0.28000.270410.0.28000.2704
Details and references
CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-284

More Microsoft advisories

All Microsoft
High 7.1Aug 11Copilot Chat Security Feature Bypass VulnerabilityCVE-2026-65675fixed in 1.132.1High 7.8Aug 11Copilot Custom Agent Hook Remote Code Execution VulnerabilityCVE-2026-70335fixed in 1.132.1MediumAug 11Information disclosure vulnerabilityCVE-2026-47285fixed in 1.132.1High 8.8Aug 11Fileless RCE in VS Code Web Remote Terminal via URL-Controlled NODE_OPTIONSCVE-2026-70336fixed in 1.132.1High 8.8Aug 11Visual Studio Code web deployments - environmentService.ts - RCE via NODE_OPTIONS --import from URL payloadCVE-2026-69320fixed in 1.132.1High 7.8Aug 11TerminalInstance._createProcess - Workspace Trust bypass via terminal waitOnExitCVE-2026-69278fixed in 1.132.1