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7.8 High

CVE-2026-42978 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push…

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.

Affected products and versions

Product Affected versions Fixed in
Windows 10 Version 1809 10.0 10.0.17763.0 → < 10.0.17763.8880 10.0.17763.8880
Windows 10 Version 21H2 10.0 10.0.19044.0 → < 10.0.19044.7417 10.0.19044.7417
Windows 10 Version 22H2 10.0 10.0.19045.0 → < 10.0.19045.7417 10.0.19045.7417
Windows 11 Version 23H2 10.0 10.0.22631.0 → < 10.0.22631.7219 10.0.22631.7219
Windows 11 Version 24H2 10.0 10.0.26100.0 → < 10.0.26100.8655 10.0.26100.8655
Windows 11 Version 25H2 10.0 10.0.26200.0 → < 10.0.26200.8655 10.0.26200.8655
Windows 11 version 26H1 10.0 10.0.28000.0 → < 10.0.28000.2269 10.0.28000.2269
Windows Server 2019 10.0 10.0.17763.0 → < 10.0.17763.8880 10.0.17763.8880
Windows Server 2019 (Server Core installation) 10.0 10.0.17763.0 → < 10.0.17763.8880 10.0.17763.8880
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Product Affected versions Fixed in
Windows Server 2022 10.0 10.0.20348.0 → < 10.0.20348.5256 10.0.20348.5256
Windows Server 2025 10.0 10.0.26100.0 → < 10.0.26100.32995 10.0.26100.32995
Windows Server 2025 (Server Core installation) 10.0 10.0.26100.0 → < 10.0.26100.32995 10.0.26100.32995

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