---
id: CVE-2026-81353
title: >-
  Heap-based buffer overflow in Microsoft Windows Codecs Library allows an
  unauthorized attacker to execute code locally.
summary: >-
  Heap-based buffer overflow in Microsoft Windows Codecs Library allows an
  unauthorized attacker to execute code locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: microsoft
product: heif_image_extension
affected:
  - heif_image_extension < 1.2.48.0
patched:
  - heif_image_extension 1.2.48.0
published: '2026-09-08'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T19:03:59.360'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81353'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81353'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00466
epssPercentile: 0.37762
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-10T20:46:03.380985Z'
ingestedAt: '2026-09-08T19:08:49.631Z'
---

## Overview

Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code locally.

## Affected

- `heif_image_extension < 1.2.48.0`

## Remediation

Upgrade past the affected range:

- `heif_image_extension 1.2.48.0`