CVE-2026-42977

EUVD-2026-35739
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_10_1809
𝑥
< 10.0.17763.8880
microsoftwindows_10_1809
𝑥
< 10.0.17763.8880
microsoftwindows_10_21h2
𝑥
< 10.0.19044.7417
microsoftwindows_10_21h2
𝑥
< 10.0.19044.7417
microsoftwindows_10_21h2
𝑥
< 10.0.19044.7417
microsoftwindows_10_22h2
𝑥
< 10.0.19045.7417
microsoftwindows_10_22h2
𝑥
< 10.0.19045.7417
microsoftwindows_10_22h2
𝑥
< 10.0.19045.7417
microsoftwindows_11_23h2
𝑥
< 10.0.22631.7219
microsoftwindows_11_23h2
𝑥
< 10.0.22631.7219
microsoftwindows_11_24h2
𝑥
< 10.0.26100.8655
microsoftwindows_11_24h2
𝑥
< 10.0.26100.8655
microsoftwindows_11_25h2
𝑥
< 10.0.26200.8655
microsoftwindows_11_25h2
𝑥
< 10.0.26200.8655
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2269
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2269
microsoftwindows_server_2019
𝑥
< 10.0.17763.8880
microsoftwindows_server_2022
𝑥
< 10.0.20348.5256
microsoftwindows_server_2025
𝑥
< 10.0.26100.32995
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 10
1809 (x64, x86)
21H2 (arm64, x64, x86)
22H2 (arm64, x64, x86)
Windows 11
23H2 (arm64, x64)
24H2 (arm64, x64)
25H2 (arm64, x64)
26H1 (arm64, x64)
Windows Server 2019
Server Core
Standard
Windows Server 2022
Server Core
Standard
Windows Server 2025
Server Core
Standard