# CVE-2025-59728: Heap-buffer-overflow write in FFmpeg MDASH resolve_content_path

> An out-of-bounds write in FFmpeg's MPEG-DASH manifest handling allows attackers to cause memory corruption, potentially leading to code execution or crashes.

- **Severity:** High 8.7 (`CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Oct 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-xqxw-8f97-vf86, OESA-2026-2662, OESA-2026-2665, SUSE-SU-2025:3810-1, UBUNTU-CVE-2025-59728, USN-7982-1, openSUSE-SU-2025:15640-1

## What is CVE-2025-59728?

CVE-2025-59728 is a high-severity memory corruption vulnerability in FFmpeg MPEG-DASH, published on 6 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

When calculating the content path in handling of MPEG-DASH manifests, there's an out-of-bounds NUL-byte write one byte past the end of the buffer.When we call xmlNodeGetContent below [0], it returns a buffer precisely allocated to match the string length, using strdup internally. If this buffer is not an empty string, it is assigned to root_url at [1].If the last (non-NUL) byte in this buffer is not '/' then we append '/' in-place at [2]. This will write two bytes into the buffer, starting at the last valid byte in the buffer, writing the NUL byte beyond the end of the allocated buffer.
We recommend upgrading to version 8.0 or beyond.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2025-59728?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `ffmpeg-4` | SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 4.4.6-150400.3.55.1 |
| `ffmpeg-4` | SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 4.4.6-150400.3.55.1 |
| `ffmpeg-4` | SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 4.4.6-150400.3.55.1 |
| `ffmpeg-4` | SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 4.4.6-150400.3.55.1 |
| `ffmpeg-4` | openSUSE:Tumbleweed | All versions | 4.4.6-9.1 |

## How do I fix CVE-2025-59728?

Upgrade to a fixed version.

## Is CVE-2025-59728 being exploited?

There is no known exploitation of CVE-2025-59728 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59728 and fix it if it is affected.

What it is: CVE-2025-59728 is a high-severity memory corruption vulnerability in FFmpeg MPEG-DASH, published on 6 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-59728 in the wild and no public exploit code.

Affected product: FFmpeg MPEG-DASH. 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-2025-59728/ (Markdown: https://insights.sbomify.com/CVE-2025-59728/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59728
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59728
- OSV: https://osv.dev/vulnerability/CVE-2025-59728

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59728/
Summaries are generated and may contain mistakes; the official description above is the record.