# CVE-2022-3666: Axiomatic Bento4 mp42ts Ap4LinearReader.cpp Advance use after free

> A use-after-free vulnerability in Bento4's mp42ts tool allows remote attackers to execute arbitrary code or cause denial of service via crafted media files.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Oct 2022
- **Updated:** 14 Apr 2025
- **Also known as:** GHSA-7mxx-778x-3hwg, UBUNTU-CVE-2022-3666

## What is CVE-2022-3666?

CVE-2022-3666 is a high-severity use after free vulnerability in Axiosys Bento4, published on 26 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, has been found in Axiomatic Bento4. Affected by this issue is the function AP4_LinearReader::Advance of the file Ap4LinearReader.cpp of the component mp42ts. The manipulation leads to use after free. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-212006 is the identifier assigned to this vulnerability.

Weakness: CWE-416 (Use After Free), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2022-3666?

It affects 1 product.


Products: Axiosys Bento4.

## How do I fix CVE-2022-3666?

No fix has been published for CVE-2022-3666 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-3666 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3666 exists.

## Other vulnerabilities in Axiosys Bento4

- [CVE-2024-31002](https://insights.sbomify.com/CVE-2024-31002/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-14531](https://insights.sbomify.com/CVE-2018-14531/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-14532](https://insights.sbomify.com/CVE-2018-14532/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-13846](https://insights.sbomify.com/CVE-2018-13846/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-31003](https://insights.sbomify.com/CVE-2024-31003/): Memory corruption in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3666 and fix it if it is affected.

What it is: CVE-2022-3666 is a high-severity use after free vulnerability in Axiosys Bento4, published on 26 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3666 exists.

Affected product: Axiosys Bento4. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-3666/ (Markdown: https://insights.sbomify.com/CVE-2022-3666/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3666
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3666
- OSV: https://osv.dev/vulnerability/CVE-2022-3666

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3666/
Summaries are generated and may contain mistakes; the official description above is the record.