# CVE-2023-6604: Ffmpeg: hls xbin demuxer dos amplification in ffmpeg

> Attackers can cause denial of service in FFmpeg by triggering excessive CPU and storage usage through improper validation in the HLS XBIN demuxer.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Jan 2025
- **Updated:** 3 Nov 2025
- **Also known as:** DEBIAN-CVE-2023-6604, GHSA-j6rq-mppc-h3jr, JLSEC-2025-148, OESA-2026-3877, OESA-2026-3878, UBUNTU-CVE-2023-6604

## What is CVE-2023-6604?

CVE-2023-6604 is a medium-severity denial of service vulnerability in Ffmpeg Ffmpeg, published on 6 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was found in FFmpeg. This vulnerability allows unexpected additional CPU load and storage consumption, potentially leading to degraded performance or denial of service via the demuxing of arbitrary data as XBIN-formatted data without proper format validation.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-99 (Improper Control of Resource Identifiers)

## Which versions are affected by CVE-2023-6604?

It affects 1 product.


Products: Ffmpeg Ffmpeg.

## How do I fix CVE-2023-6604?

Upgrade to a fixed version.

## Is CVE-2023-6604 being exploited?

There is no known exploitation of CVE-2023-6604 in the wild and no public exploit code.

## Other vulnerabilities in Ffmpeg Ffmpeg

- [CVE-2013-0864](https://insights.sbomify.com/CVE-2013-0864/): Memory corruption in n/a (critical 10.0)
- [CVE-2013-0872](https://insights.sbomify.com/CVE-2013-0872/): Memory corruption in n/a (critical 10.0)
- [CVE-2013-0873](https://insights.sbomify.com/CVE-2013-0873/): Memory corruption in n/a (critical 10.0)
- [CVE-2013-4265](https://insights.sbomify.com/CVE-2013-4265/): Null dereference in n/a (critical 10.0)
- [CVE-2011-3937](https://insights.sbomify.com/CVE-2011-3937/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6604 and fix it if it is affected.

What it is: CVE-2023-6604 is a medium-severity denial of service vulnerability in Ffmpeg Ffmpeg, published on 6 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-6604 in the wild and no public exploit code.

Affected product: Ffmpeg Ffmpeg. 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-2023-6604/ (Markdown: https://insights.sbomify.com/CVE-2023-6604/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6604
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6604
- OSV: https://osv.dev/vulnerability/CVE-2023-6604

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6604/
Summaries are generated and may contain mistakes; the official description above is the record.