CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-66804

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

Exploit prediction scoring system (EPSS) score

EPSS Score 0.053

EPSS Ranking 92.1%

CVSS Severity

CVSS v3 Score 7.8

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66804

Products affected by CVE-2026-66804

Microsoft » Windows 10 22h2 » Version: N/A

cpe:2.3:o:microsoft:windows_10_22h2:-
Microsoft » Windows 10 22h2 » Version: 10.0.19041.3570

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19041.3570
Microsoft » Windows 10 22h2 » Version: 10.0.19041.3920

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19041.3920
Microsoft » Windows 10 22h2 » Version: 10.0.19042.2486

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19042.2486
Microsoft » Windows 10 22h2 » Version: 10.0.19044.2486

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19044.2486
Microsoft » Windows 10 22h2 » Version: 10.0.19044.3324

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19044.3324
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2130

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2130
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2251

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2251
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2311

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2311
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2364

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2364
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2486

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2486
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2546

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2546
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2604

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2604
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2673

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2673
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2728

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2728
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2788

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2788
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2846

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2846
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2913

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2913
Microsoft » Windows 10 22h2 » Version: 10.0.19045.2965

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.2965
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3031

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3031
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3086

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3086
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3087

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3087
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3155

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3155
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3208

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3208
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3271

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3271
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3324

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3324
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3393

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3393
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3448

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3448
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3516

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3516
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3570

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3570
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3693

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3693
Microsoft » Windows 10 22h2 » Version: 10.0.19045.3930

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.3930
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4046

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4046
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4170

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4170
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4291

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4291
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4412

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4412
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4529

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4529
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4651

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4651
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4780

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4780
Microsoft » Windows 10 22h2 » Version: 10.0.19045.4894

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.4894
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5011

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5011
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5131

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5131
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5247

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5247
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5371

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5371
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5487

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5487
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5608

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5608
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5737

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5737
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5854

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5854
Microsoft » Windows 10 22h2 » Version: 10.0.19045.5965

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.5965
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6093

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6093
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6216

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6216
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6321

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6321
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6332

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6332
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6456

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6456
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6575

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6575
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6691

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6691
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6809

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6809
Microsoft » Windows 10 22h2 » Version: 10.0.19045.6937

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.6937
Microsoft » Windows 10 22h2 » Version: 10.0.19045.7058

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.7058
Microsoft » Windows 10 22h2 » Version: 10.0.19045.7184

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.7184
Microsoft » Windows 10 22h2 » Version: 10.0.19045.7291

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.7291
Microsoft » Windows 10 22h2 » Version: 10.0.19045.7417

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.7417
Microsoft » Windows 10 22h2 » Version: 10.0.19045.7548

cpe:2.3:o:microsoft:windows_10_22h2:10.0.19045.7548
Microsoft » Windows 11 24h2 » Version: N/A

cpe:2.3:o:microsoft:windows_11_24h2:-
Microsoft » Windows 11 24h2 » Version: 10.0.26100.1742

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.1742
Microsoft » Windows 11 24h2 » Version: 10.0.26100.2033

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.2033
Microsoft » Windows 11 24h2 » Version: 10.0.26100.2161

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.2161
Microsoft » Windows 11 24h2 » Version: 10.0.26100.2314

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.2314
Microsoft » Windows 11 24h2 » Version: 10.0.26100.2454

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.2454
Microsoft » Windows 11 24h2 » Version: 10.0.26100.2605

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.2605
Microsoft » Windows 11 24h2 » Version: 10.0.26100.2894

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.2894
Microsoft » Windows 11 24h2 » Version: 10.0.26100.3107

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.3107
Microsoft » Windows 11 24h2 » Version: 10.0.26100.3194

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.3194
Microsoft » Windows 11 24h2 » Version: 10.0.26100.3403

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.3403
Microsoft » Windows 11 24h2 » Version: 10.0.26100.3476

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.3476
Microsoft » Windows 11 24h2 » Version: 10.0.26100.3775

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.3775
Microsoft » Windows 11 24h2 » Version: 10.0.26100.3981

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.3981
Microsoft » Windows 11 24h2 » Version: 10.0.26100.4061

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.4061
Microsoft » Windows 11 24h2 » Version: 10.0.26100.4270

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.4270
Microsoft » Windows 11 24h2 » Version: 10.0.26100.4349

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.4349
Microsoft » Windows 11 24h2 » Version: 10.0.26100.4652

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.4652
Microsoft » Windows 11 24h2 » Version: 10.0.26100.4851

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.4851
Microsoft » Windows 11 24h2 » Version: 10.0.26100.4946

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.4946
Microsoft » Windows 11 24h2 » Version: 10.0.26100.6508

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.6508
Microsoft » Windows 11 24h2 » Version: 10.0.26100.6563

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.6563
Microsoft » Windows 11 24h2 » Version: 10.0.26100.6584

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.6584
Microsoft » Windows 11 24h2 » Version: 10.0.26100.6899

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.6899
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7092

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7092
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7171

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7171
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7392

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7392
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7456

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7456
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7462

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7462
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7623

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7623
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7781

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7781
Microsoft » Windows 11 24h2 » Version: 10.0.26100.7979

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.7979
Microsoft » Windows 11 24h2 » Version: 10.0.26100.8246

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.8246
Microsoft » Windows 11 24h2 » Version: 10.0.26100.8390

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.8390
Microsoft » Windows 11 24h2 » Version: 10.0.26100.8457

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.8457
Microsoft » Windows 11 24h2 » Version: 10.0.26100.8655

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.8655
Microsoft » Windows 11 24h2 » Version: 10.0.26100.8875

cpe:2.3:o:microsoft:windows_11_24h2:10.0.26100.8875
Microsoft » Windows 11 25h2 » Version: N/A

cpe:2.3:o:microsoft:windows_11_25h2:-
Microsoft » Windows 11 25h2 » Version: 10.0.26200.6899

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.6899
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7092

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7092
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7171

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7171
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7392

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7392
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7456

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7456
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7462

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7462
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7623

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7623
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7781

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7781
Microsoft » Windows 11 25h2 » Version: 10.0.26200.7979

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.7979
Microsoft » Windows 11 25h2 » Version: 10.0.26200.8246

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.8246
Microsoft » Windows 11 25h2 » Version: 10.0.26200.8390

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.8390
Microsoft » Windows 11 25h2 » Version: 10.0.26200.8457

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.8457
Microsoft » Windows 11 25h2 » Version: 10.0.26200.8655

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.8655
Microsoft » Windows 11 25h2 » Version: 10.0.26200.8875

cpe:2.3:o:microsoft:windows_11_25h2:10.0.26200.8875
Microsoft » Windows 11 26h1 » Version: N/A

cpe:2.3:o:microsoft:windows_11_26h1:-
Microsoft » Windows 11 26h1 » Version: 10.0.28000.1575

cpe:2.3:o:microsoft:windows_11_26h1:10.0.28000.1575
Microsoft » Windows 11 26h1 » Version: 10.0.28000.1719

cpe:2.3:o:microsoft:windows_11_26h1:10.0.28000.1719
Microsoft » Windows 11 26h1 » Version: 10.0.28000.1836

cpe:2.3:o:microsoft:windows_11_26h1:10.0.28000.1836
Microsoft » Windows 11 26h1 » Version: 10.0.28000.2113

cpe:2.3:o:microsoft:windows_11_26h1:10.0.28000.2113
Microsoft » Windows 11 26h1 » Version: 10.0.28000.2269

cpe:2.3:o:microsoft:windows_11_26h1:10.0.28000.2269
Microsoft » Windows 11 26h1 » Version: 10.0.28000.2525

cpe:2.3:o:microsoft:windows_11_26h1:10.0.28000.2525

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-66804

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