CVE-2026-66804 PUBLISHED

Microsoft Windows Cross Device Service Elevation of Privilege Vulnerability

Assigner: microsoft
Reserved: 27.07.2026 Published: 11.08.2026 Updated: 11.08.2026

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

Metrics

CVSS 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
CVSS Score: 7.8

Product Status

Vendor Microsoft
Product Windows 10 Version 22H2
Versions
  • affected from 10.0.19045.0 to 10.0.19045.7663 (excl.)
Vendor Microsoft
Product Windows 11 Version 24H2
Versions
  • affected from 10.0.26100.0 to 10.0.26100.9168 (excl.)
Vendor Microsoft
Product Windows 11 Version 25H2
Versions
  • affected from 10.0.26200.0 to 10.0.26200.9168 (excl.)
Vendor Microsoft
Product Windows 11 version 26H1
Versions
  • affected from 10.0.28000.0 to 10.0.28000.2704 (excl.)

References

Problem Types