What’s Vulnerable › Vulnerabilities

CVE-2020-22031

• Severity: high (CVSS 8.8 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: 2021-05-27 · updated 2026-06-17
• Weakness: CWE-787

Description

A Heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/vf_w3fdif.c in filter16_complex_low, which might lead to memory corruption and other potential consequences.

Affected products

• Debian Linux: 9.0, 10.0
• FFmpeg: 4.2

References

• https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
• https://trac.ffmpeg.org/attachment/ticket/8243/gdb-vf_w3fdif_191
• https://trac.ffmpeg.org/ticket/8243
• https://www.debian.org/security/2021/dsa-4990
• https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
• https://trac.ffmpeg.org/attachment/ticket/8243/gdb-vf_w3fdif_191
• https://trac.ffmpeg.org/ticket/8243
• https://www.debian.org/security/2021/dsa-4990

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