CVE-2026-42900

HighCVSS 8.1/10Last modified Jul 23, 2026

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-362CWE-416

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.9339
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.9020
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.7548
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.7548
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.8875
MicrosoftWindows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.8875
MicrosoftWindows 11 version 26H1>= 10.0.28000.0, < 10.0.28000.2525
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.9339
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.9339
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.9020
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.9020
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.5386
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.33158
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.33158

References

Timeline

Published
Jul 14, 2026
Last modified
Jul 23, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-4290110.0Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.CVE-2026-429027.8Improper authorization in Microsoft PowerToys allows an authorized attacker to elevate privileges locally.CVE-2026-429036.5Null pointer dereference in Windows Kerberos allows an authorized attacker to deny service over a network.CVE-2026-429049.6Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.CVE-2026-429057.8Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.CVE-2026-429065.5Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to disclose information locally.CVE-2026-429076.5Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to disclose information over a netCVE-2026-429087.5Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.CVE-2026-429097.5Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized CVE-2026-429107.8Out-of-bounds write in Windows Hotpatch Monitoring Service allows an authorized attacker to elevate privileges locally.CVE-2026-429117.0Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.CVE-2026-429127.0Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service allows an authorize