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CVE-2026-108400

8.8 high SSVC exploitation: none Published
NVD · CVE.org

Integer overflow or wraparound in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.

Fix

Microsoft's update · Critical

  • Release Notes — HEVC Video Extensions from Device Manufacturer on Windows 11 Version 26H1, HEVC Video Extensions from Device Manufacturer on Windows 11 version 26H1, HEVC Video Extensions from Device Manufacturer on Windows 11 Version 25H2 · build 2.5.25.0
  • Release Notes — HEVC Video Extensions from Device Manufacturer on Windows Server 2025, HEVC Video Extensions from Device Manufacturer on Windows 11 Version 23H2, HEVC Video Extensions from Device Manufacturer on Windows 11 Version 24H2, HEVC Video Extensions from Device Manufacturer on Windows Server 2025 (Server Core installation), HEVC Video Extensions from Device Manufacturer on Windows 10 Version 22H2 for 32-bit Systems, HEVC Video Extensions from Device Manufacturer on Windows 10 Version 22H2, HEVC Video Extensions from Device Manufacturer on Windows 10 Version 21H2, HEVC Video Extensions from Device Manufacturer on Windows 10 Version 21H2 for 32-bit Systems, HEVC Video Extensions from Device Manufacturer on Windows Server 2022 (Server Core installation), HEVC Video Extensions from Device Manufacturer on Windows Server 2022, HEVC Video Extensions from Device Manufacturer on Windows Server 2019 (Server Core installation), HEVC Video Extensions from Device Manufacturer on Windows Server 2019, HEVC Video Extensions from Device Manufacturer on Windows 10 Version 1809, HEVC Video Extensions from Device Manufacturer on Windows 10 Version 1809 for 32-bit Systems · build 2.4.86.0
  • Release Notes — HEVC Video Extensions for Licensed Applications · build 2.4.85.0
  • Release Notes — HEVC Video Extensions · build 2.4.87.0

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-28 · Exploitation Less Likely.

Vendor advisories in the News 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 2

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 19:29
  2. First seenCVSS 8.8NVD modified 2026-10-13 23:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1