CVE-2026-42991— Windows Push Notifications Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Windows 10 Version 1809
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft Windows Push Notifications是美国微软（Microsoft）公司的一个推送通知服务。它提供了一种可靠的方式提供新的更新。 Microsoft Windows Push Notifications存在竞争条件问题漏洞。以下产品和版本受到影响：Windows Server 2019 (Server Core installation),Windows Server 2022,Windows Server 2022 (Server Core installation)
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 13
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0< 10.0.17763.8880 |
affected |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0< 10.0.19044.7417 |
affected |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0< 10.0.19045.7417 |
affected |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0< 10.0.22631.7219 |
affected |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0< 10.0.22631.7219 |
affected |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0< 10.0.26100.8655 |
affected |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0< 10.0.26200.8655 |
affected |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0< 10.0.28000.2269 |
affected |
| Microsoft | Windows Server 2019 | 10.0.17763.0< 10.0.17763.8880 |
affected |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0< 10.0.17763.8880 |
affected |
| Microsoft | Windows Server 2022 | 10.0.20348.0< 10.0.20348.5256 |
affected |
| Microsoft | Windows Server 2025 | 10.0.26100.0< 10.0.26100.32995 |
affected |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0< 10.0.26100.32995 |
affected |
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I. Basic Information for CVE-2026-42991
Vulnerability Information
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Vulnerability Title
Windows Push Notifications Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Push Notifications 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Push Notifications是美国微软（Microsoft）公司的一个推送通知服务。它提供了一种可靠的方式提供新的更新。 Microsoft Windows Push Notifications存在竞争条件问题漏洞。以下产品和版本受到影响：Windows Server 2019 (Server Core installation),Windows Server 2022,Windows Server 2022 (Server Core installation)
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 ~ 10.0.17763.8880 | - |
|
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 ~ 10.0.19044.7417 | - |
|
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 ~ 10.0.19045.7417 | - |
|
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 ~ 10.0.22631.7219 | - |
|
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 ~ 10.0.22631.7219 | - |
|
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 ~ 10.0.26100.8655 | - |
|
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 ~ 10.0.26200.8655 | - |
|
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 ~ 10.0.28000.2269 | - |
|
| Microsoft | Windows Server 2019 | 10.0.17763.0 ~ 10.0.17763.8880 | - |
|
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 ~ 10.0.17763.8880 | - |
|
| Microsoft | Windows Server 2022 | 10.0.20348.0 ~ 10.0.20348.5256 | - |
|
| Microsoft | Windows Server 2025 | 10.0.26100.0 ~ 10.0.26100.32995 | - |
|
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 ~ 10.0.26100.32995 | - |
|
II. Public POCs for CVE-2026-42991
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-42991 (1)
Same Patch Batch · Microsoft · 2026-06-09 · 200 CVEs total
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| CVE-2026-47643 | 9.8 CRITICAL | Azure Stack Edge Remote Code Execution Vulnerability |
| CVE-2026-44815 | 9.8 CRITICAL | DHCP Client Service Remote Code Execution Vulnerability |
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| CVE-2026-47281 | 9.6 CRITICAL | Visual Studio Code Elevation of Privilege Vulnerability |
| CVE-2026-45602 | 9.1 CRITICAL | Windows Dynamic Host Configuration Protocol (DHCP) Tampering Vulnerability |
| CVE-2026-45484 | 8.8 HIGH | Microsoft SharePoint Elevation of Privilege Vulnerability |
| CVE-2026-47289 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-45648 | 8.8 HIGH | Windows Active Directory Domain Services Remote Code Execution Vulnerability |
| CVE-2026-32193 | 8.8 HIGH | Azure Kubernetes Service (AKS) Remote Code Execution Vulnerability |
| CVE-2026-45504 | 8.8 HIGH | Microsoft Exchange Server Elevation of Privilege Vulnerability |
| CVE-2026-40371 | 8.8 HIGH | Microsoft Dynamics 365 (on-premises) Elevation of Privilege Vulnerability |
| CVE-2026-42985 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-47653 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-45607 | 8.4 HIGH | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2026-45458 | 8.4 HIGH | Microsoft Outlook and Word Remote Code Execution Vulnerability |
| CVE-2026-45641 | 8.4 HIGH | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2026-45472 | 8.4 HIGH | Microsoft Office Remote Code Execution Vulnerability |
Showing top 20 of 200 CVEs. View all on vendor page → →
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