What’s Vulnerable › Vulnerabilities

CVE-2020-22027

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% 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 exits in FFmpeg 4.2 in deflate16 at libavfilter/vf_neighbor.c, which might lead to memory corruption and other potential consequences.

Affected products

• Debian Linux: 10.0
• FFmpeg: 4.2

References

• https://trac.ffmpeg.org/attachment/ticket/8242/gdb-vf_neighbor_191
• https://trac.ffmpeg.org/ticket/8242
• https://www.debian.org/security/2021/dsa-4990
• https://trac.ffmpeg.org/attachment/ticket/8242/gdb-vf_neighbor_191
• https://trac.ffmpeg.org/ticket/8242
• https://www.debian.org/security/2021/dsa-4990

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