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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-58634

Microsoft Windows 11 version 26H1: use after free

Microsoft

CVE-2026-58634 · Published Jul 14, 2026 · updated Jul 15, 2026

High7.8
Fix: upgrade to 10.0.28000.2525 or later
Microsoft advisory

Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

Affected versions

PackageAffectedFixed in
Windows 11 version 26H1
Product
>= 10.0.28000.0, < 10.0.28000.252510.0.28000.2525
Details and references
CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-416

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