PT-2026-111895 · Microsoft · Windows+15

CVE-2026-100220

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Published

2026-10-13

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Updated

2026-10-14

CVSS v3.1

8.8

High

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Microsoft patched CVE-2026-100220, a Critical remote code execution flaw in the Windows Media Video Decoder.
CVSS 8.8. A user has to open a crafted media file.
Not exploited or publicly disclosed.
Affects Windows 10 1607 through Windows 11 26H2 and Server 2012 to 2025. https://t.co/nGIWri312V

Fix

RCE

Heap Based Buffer Overflow

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Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-100220

Affected Products

Windows
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21H2
Windows 10 Version 22H2
Windows 11 Version 23H2
Windows 11 Version 24H2
Windows 11 Version 25H2
Windows 11 Version 26H2
Windows 11 Version 26H1
Windows Server 2012
Windows Server 2012 R2
Windows Server 2016
Windows Server 2019
Windows Server 2022
Windows Server 2025