---
id: "CVE-2026-125070"
page: "https://infrastack.ai/live/CVE-2026-125070"
kind: "vulnerability"
aliases: ["CVE-2026-125070"]
title: "FFmpeg: crafted EA video file crashes decoder via NULL pointer"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["ffmpeg", "libavcodec", "media-processing", "package"]
not_affected_if: ["no-ea-decoder-use", "trusted-input-only"]
published_at: "2026-11-09T19:16:49+00:00"
first_seen_at: "2026-11-09T19:28:15+00:00"
updated_at: "2026-11-09T19:31:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125070", "first_seen_at": "2026-11-09T19:28:15+00:00"}]
exploit_sources: []
---

# FFmpeg: crafted EA video file crashes decoder via NULL pointer

Link for people: https://infrastack.ai/live/CVE-2026-125070 (this .md is for agents)

FFmpeg's EA TQI decoder ignores a failed bit-reader setup after an integer overflow, leaving a NULL pointer dereference. A crafted EA file with an oversized pIQT chunk crashes the process, causing denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the FFmpeg version with `ffmpeg -version`; versions through `9.0.2` are described as affected.
- Find services that decode untrusted media with libavcodec, such as transcoding pipelines or upload previews.

## Timeline

- 2026-11-09T19:28:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125070

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-null-pointer-dereference-in-ea-tqi-decoder
- [fix] Patch: github.com https://github.com/FFmpeg/FFmpeg/commit/5d7b743bdfb724df21fd43a3d7f3258382eb578c

## From the sources

FFmpeg through 9.0.2 contains a NULL pointer dereference vulnerability in tqi_decode_frame() in libavcodec/eatqi.c, which ignores init_get_bits() failure after an integer overflow. Attackers can supply a crafted EA file with a pIQT chunk carrying a 2^28-byte payload to crash the process, causing denial of service.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_