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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-49173

Microsoft Windows 11 version 26H1: use after free

Microsoft

CVE-2026-49173 · Published Jul 14, 2026 · updated Jul 22, 2026

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

Use after free in Windows Kernel 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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