CVE-2026-114164
High CVSS 8.8Published 2026-11-10 ยท last changed 2026-11-10
The fix
Microsoft fixes this in a Microsoft Store app update, so Windows Update and WSUS won't deliver it. The app at the version below, or later, has the fix.
| App | Fixed in version | Package | Released |
|---|---|---|---|
| HEVC Video Extensions | 2.4.151.0 | Microsoft.HEVCVideoExtensions | 2026-11-10 |
| HEVC Video Extensions for Licensed Applications | 2.4.150.0 | Microsoft.HEVCVideoExtensionFirstParty | 2026-11-10 |
| HEVC Video Extensions from Device Manufacturer | 2.4.149.0 | Microsoft.HEVCVideoExtension | 2026-11-10 |
| HEVC Video Extensions from Device Manufacturer | 2.5.48.0 | Microsoft.HEVCVideoExtension | 2026-11-10 |
An app listed twice has one fix per version line (for example 2.4.x on Windows 10 and 2.5.x on Windows 11). Compare against the row on the same line as the installed version.
The Store updates these apps on its own schedule. A machine with Store updates turned off, or no
Store access at all (common on managed fleets), keeps the old version.
To check one, run Get-AppxPackage -AllUsers -Name Microsoft.HEVCVideoExtensions and
compare its Version to the table.
What it is
Integer underflow (wrap or wraparound) in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Sources
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H