---
id: CVE-2025-63757
title: >-
  Integer overflow vulnerability in the yuv2ya16_X_c_template function in
  libswscale/output.c in FFmpeg 8.0.
summary: >-
  Integer overflow vulnerability in the yuv2ya16_X_c_template function in
  libswscale/output.c in FFmpeg 8.0.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-190
vendor: ffmpeg
product: ffmpeg
affected:
  - ffmpeg = 8
published: '2025-12-18'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T11:10:00.203'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-63757'
references:
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20698'
    label: cve@mitre.org
  - url: 'https://ffmpeg.org/security.html'
    label: cve@mitre.org
  - url: 'https://gist.github.com/miora-sora/43c1c5616dd5b4f960a9d20296ef4833'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00384
epssPercentile: 0.30446
ingestedAt: '2026-10-13T11:23:51.133Z'
---

## Overview

Integer overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.

## Affected

- `ffmpeg = 8`

## Remediation

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