CVE-2026-83706: Windows 11 Version 24H2 10.0.26100.0 to before 10.0.26100.9445; +4 more affected products

Affected technology

Windows 11 Version 24H2 · 10.0.26100.0 to before 10.0.26100.9445
Microsoft

Windows 11 Version 25H2 · 10.0.26200.0 to before 10.0.26200.9445
Microsoft

Windows 11 version 26H1 · 10.0.28000.0 to before 10.0.28000.2954
Microsoft

Windows Server 2025 · 10.0.26100.0 to before 10.0.26100.33438
Microsoft

Windows Server 2025 (Server Core installation) · 10.0.26100.0 to before 10.0.26100.33438
Microsoft

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · High privileges required · No user interaction required

What an attacker can do

The source says use after free in Windows NTFS allows an authorized attacker to elevate privileges locally. Vendor/CNA’s CVSS 3.1 assessment (base score 6.7/10) rates confidentiality, integrity and availability impact as high.