---
id: CVE-2026-108400
title: >-
  Integer overflow or wraparound in Microsoft Windows Codecs Library allows an
  unauthorized attacker to execute code over a network.
summary: >-
  Integer overflow or wraparound in Microsoft Windows Codecs Library allows an
  unauthorized attacker to execute code over a network.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-190
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T23:17:30.400'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108400'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108400'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-13T19:43:28.927Z'
vendor: Microsoft
product: HEVC Video Extensions
affected:
  - hevc_video_extensions >= 1.0.0 < 2.4.87.0
  - hevc_video_extensions_for_licensed_applications >= 2.0.0.0 < 2.4.85.0
  - hevc_video_extensions_from_device_manufacturer >= 2.0.0.0 < 2.5.25.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-13T22:10:22.226494Z'
epss: 0.00905
epssPercentile: 0.59655
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.