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CVE-2026-42906 Microsoft CVE debrief

CVE-2026-42906 is a MEDIUM severity vulnerability (CVSS Score: 5.5) in Windows Shell that allows an authorized attacker to disclose information locally. The vulnerability was published on 2026-06-09T17:17:10.310Z and last modified on 2026-06-11T16:13:37.987Z.

Vendor
Microsoft
Product
Windows Shell
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Administrators and users of Microsoft Windows 10, Windows 11, and Windows Server systems should be aware of this vulnerability.

Technical summary

The vulnerability is caused by exposure of sensitive information to an unauthorized actor in Windows Shell. An authorized attacker can exploit this vulnerability to disclose information locally.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates provided by Microsoft to vulnerable systems.
  • Refer to the vendor advisory at resourceLinkAnnotations with id 'ref-4' for more information.

Evidence notes

The CVE record and details are sourced from official databases.

Official resources

CVE-2026-42906 was published on 2026-06-09T17:17:10.310Z and last modified on 2026-06-11T16:13:37.987Z.