# CVE-2026-125188: FFmpeg through 9.0.2 ProRes prores_aw Heap Out-of-Bounds Read in Interlaced Encoding


- **Severity:** Low 2.0 (`CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 9 Nov 2026
- **Updated:** 10 Nov 2026
- **Also known as:** GHSA-j57g-62wm-j7w2, UBUNTU-CVE-2026-125188

## What is CVE-2026-125188?

CVE-2026-125188 is a low-severity vulnerability in FFmpeg, published on 9 Nov 2026. 

### Official description

FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in libavcodec/proresenc_anatoliy.c that occurs when the prores_aw encoder processes interlaced, odd-height frames. Attackers can supply odd-height video that causes subimage_with_fill_template() to fill padding rows from memory before the fill_y buffer, leaking heap contents into the encoded output.

Weakness: CWE-127 (Buffer Under-read)

## Which versions are affected by CVE-2026-125188?


## How do I fix CVE-2026-125188?

No fix has been published for CVE-2026-125188 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-125188 being exploited?

There is no known exploitation of CVE-2026-125188 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-125188 and fix it if it is affected.

What it is: CVE-2026-125188 is a low-severity vulnerability in FFmpeg, published on 9 Nov 2026. 
Exploitation: There is no known exploitation of CVE-2026-125188 in the wild and no public exploit code.

Affected product: 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-2026-125188/ (Markdown: https://insights.sbomify.com/CVE-2026-125188/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-125188
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-125188
- OSV: https://osv.dev/vulnerability/CVE-2026-125188

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-125188/
Summaries are generated and may contain mistakes; the official description above is the record.