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CVE-2026-20840
HIGH
CVSS: 7.8
Published: 2026-01-13
Modified: 2026-07-30
Description
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
Affected Platforms
Microsoft Windows Server 2016Microsoft Windows 11 25H2Microsoft Windows 10 21H2Microsoft Windows 11 24H2Microsoft Windows Server 2019Microsoft Windows 10 22H2Microsoft Windows Server 2025Microsoft Windows Server 2008Microsoft Windows Server 2022Microsoft Windows 10 1809