What’s Vulnerable › Vulnerabilities

CVE-2020-20446

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-25 · updated 2026-06-17
• Weakness: CWE-369

Description

FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.

Affected products

• Debian Linux: 9.0, 10.0, 11.0
• FFmpeg: 4.2

References

• https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html
• https://trac.ffmpeg.org/ticket/7995
• https://www.debian.org/security/2021/dsa-4990
• https://www.debian.org/security/2021/dsa-4998
• https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html
• https://trac.ffmpeg.org/ticket/7995
• https://www.debian.org/security/2021/dsa-4990
• https://www.debian.org/security/2021/dsa-4998

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