CVE-2020-21688

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Aug 10, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

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CVE-2020-21688: High severity, CVSS 8.8 | Vulnix