---
id: "CVE-2026-125041"
page: "https://infrastack.ai/live/CVE-2026-125041"
kind: "vulnerability"
aliases: ["CVE-2026-125041"]
title: "GStreamer: crafted MOV/MP4 file triggers out-of-bounds heap read"
severity: "medium"
cvss: 5.5
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["gst-plugins-good", "gstreamer", "media-pipeline", "runtime"]
not_affected_if: ["no-untrusted-media"]
published_at: "2026-11-09T19:16:48+00:00"
first_seen_at: "2026-11-09T19:28:15+00:00"
updated_at: "2026-11-09T19:32:09+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125041", "first_seen_at": "2026-11-09T19:28:15+00:00"}]
exploit_sources: []
---

# GStreamer: crafted MOV/MP4 file triggers out-of-bounds heap read

Link for people: https://infrastack.ai/live/CVE-2026-125041 (this .md is for agents)

GStreamer's gst-plugins-good MOV/MP4 demuxer (qtdemux) does not validate row alignment and chroma geometry for uncompressed video tracks. A crafted file can cause an out-of-bounds heap read that may crash the application, a denial of service.

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

## Timeline

- 2026-11-09T19:28:15+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125041

## From the sources

A flaw was found in GStreamer's gst-plugins-good MOV/MP4 demuxer. When processing an uncompressed video track, qtdemux fails to validate the declared row alignment and chroma geometry before using them to build a video buffer layout. A crafted file can cause an out-of-bounds heap read while the sample is copied, potentially crashing the application and 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_