CVE-2026-42973 Details
Description
Exposure of sensitive information to an unauthorized actor in Windows Push Notifications allows an authorized attacker to disclose information locally.
A vulnerability in Windows Push Notifications allows an authorized attacker to locally disclose information by exploiting the use of uninitialized resources. This issue affects multiple Windows products, including various versions of Windows 10, Windows 11, Windows Server 2016, 2019, 2022, and 2025, as well as Windows Server 2019 (Server Core installation) and Windows Server 2025 (Server Core installation).
Users can apply the security updates provided by Microsoft to address this vulnerability. These security updates can be downloaded via the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles linked in the product-specific sections.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42973 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 1607 | < 10.0.14393.9234 |
CPE
Remediation
| |
| microsoft windows 10 1809 | < 10.0.17763.8880 |
CPE
Remediation
| |
| microsoft windows 10 21h2 | < 10.0.19044.7417 |
CPE
Remediation
| |
| microsoft windows 10 22h2 | < 10.0.19045.7417 |
CPE
Remediation
| |
| microsoft windows 11 23h2 | < 10.0.22631.7219 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.8655 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.8655 |
CPE
Remediation
| |
| microsoft windows 11 26h1 | < 10.0.28000.2269 |
CPE
Remediation
| |
| microsoft windows server 2016 | < 10.0.14393.9234 |
CPE
Remediation
| |
| microsoft windows server 2019 | < 10.0.17763.8880 |
CPE
Remediation
| |
| microsoft windows server 2022 | < 10.0.20348.5256 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.32995 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 9, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 10, 2026 | Initial Analysis | [email protected] |
| Jun 9, 2026 | New CVE Received | [email protected] |