CVE-2026-108400

Microsoft · Published October 13, 2026

8.8

CVSS v3.1

HIGH

Patch availableGet patch

Description

HEVC Video Extensions Remote Code Execution Vulnerability. Integer overflow or wraparound in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.

Affected Products

HEVC Video Extensions from Device Manufacturer on Windows 11 Version 26H1 for ARM64-based Systems
HEVC Video Extensions from Device Manufacturer on Windows 11 version 26H1 for x64-based Systems
HEVC Video Extensions from Device Manufacturer on Windows Server 2025
HEVC Video Extensions from Device Manufacturer on Windows 11 Version 23H2 for ARM64-based Systems

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C