CVE-2026-50434

EUVD-2026-43883
Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 39.18%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_10_21h2
𝑥
< 10.0.19044.7548
microsoftwindows_10_21h2
𝑥
< 10.0.19044.7548
microsoftwindows_10_21h2
𝑥
< 10.0.19044.7548
microsoftwindows_10_22h2
𝑥
< 10.0.19045.7548
microsoftwindows_10_22h2
𝑥
< 10.0.19045.7548
microsoftwindows_10_22h2
𝑥
< 10.0.19045.7548
microsoftwindows_11_24h2
𝑥
< 10.0.26100.8875
microsoftwindows_11_24h2
𝑥
< 10.0.26100.8875
microsoftwindows_11_25h2
𝑥
< 10.0.26200.8875
microsoftwindows_11_25h2
𝑥
< 10.0.26200.8875
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2269
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2525
microsoftwindows_server_2022
𝑥
< 10.0.20348.5386
microsoftwindows_server_2025
𝑥
< 10.0.26100.33158
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 10
21H2 (arm64, x64, x86)
KB5099539
22H2 (arm64, x64, x86)
KB5099539
Windows 11
24H2 (arm64, x64)
KB5101650
25H2 (arm64, x64)
KB5101650
26H1 (arm64, x64)
KB5101649
Windows Server 2022
Standard
KB5099540
Windows Server 2025
Server Core
KB5099536
Standard
KB5099536
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50434