VDB
CVE-2026-42991
CVE-2026-42991
PUBLISHED
CVSS 7.8 HIGH
Reported by microsoft · Published June 9, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Risk Scores
CVSS 3.1
7.8
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 |
| microsoft | windows_server_2025 | 10.0.26100.0, 10.0.26100.0, 10.0.26100.0 |
| microsoft | windows_server_2019 | 10.0.17763.0, 10.0.17763.0, 10.0.17763.0 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0, 10.0.26100.0, 10.0.26100.0 |
| microsoft | windows_10_22H2 | 10.0.19045.0, 10.0.19045.0, 10.0.19045.0 |
| microsoft | windows_server_2022 | 10.0.20348.0, 10.0.20348.0, 10.0.20348.0 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0, 10.0.17763.0, 10.0.17763.0 |
| microsoft | windows_11_26H1 | 10.0.28000.0, 10.0.28000.0, 10.0.28000.0 |
…and 16 more
Timeline
- Jun 9, 2026 CVE Published
- Jun 10, 2026 Coalition ESS Score
- Jun 10, 2026 Security Advisory
- Jun 10, 2026 Security Advisory
References
- Windows Push Notifications Elevation of Privilege Vulnerability vendor-advisorypatch