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CVE-2026-42973 Microsoft CVE debrief

CVE-2026-42973 is a medium-severity vulnerability in Windows Push Notifications that allows an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5.5 and is classified as CWE-200. It was published on 2026-06-09T17:17:13.013Z and last modified on 2026-06-10T19:54:11.160Z.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-10
Advisory published
2026-06-09
Advisory updated
2026-06-10

Who should care

Administrators and users of Windows 10, Windows 11, and Windows Server systems are advised to review the vulnerability details and apply necessary patches.

Technical summary

The vulnerability is caused by the use of an uninitialized resource in Windows Push Notifications. An authorized attacker can exploit this vulnerability to disclose information locally.

Defensive priority

Medium

Recommended defensive actions

  • Apply patches from Microsoft as soon as possible.
  • Review and update vulnerability management processes to ensure timely patching of affected systems.

Evidence notes

The vulnerability is confirmed by Microsoft and has been analyzed by the National Vulnerability Database (NVD).

Official resources

CVE-2026-42973 was published on 2026-06-09T17:17:13.013Z and last modified on 2026-06-10T19:54:11.160Z.