---
id: "CVE-2026-125707"
page: "https://infrastack.ai/live/CVE-2026-125707"
kind: "vulnerability"
aliases: ["CVE-2026-125707"]
title: "GStreamer: crafted MXF file can cause a one-byte memory write"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["gstreamer", "media-processing", "mxf", "package"]
not_affected_if: ["no-untrusted-mxf-input"]
published_at: "2026-11-10T12:17:18+00:00"
first_seen_at: "2026-11-10T12:21:54+00:00"
updated_at: "2026-11-10T12:22:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125707", "first_seen_at": "2026-11-10T12:21:54+00:00"}]
exploit_sources: []
---

# GStreamer: crafted MXF file can cause a one-byte memory write

Link for people: https://infrastack.ai/live/CVE-2026-125707 (this .md is for agents)

GStreamer's MXF demuxer has an off-by-one bounds check that lets a crafted MXF media file write one byte past the end of an array. The write can corrupt memory and crash the application that opens the file.

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

## Timeline

- 2026-11-10T12:21:54+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125707

## From the sources

A flaw was found in GStreamer's MXF demuxer. When an application processes a crafted MXF file, an off-by-one bounds check can allow a one-byte write past the logical end of a temporal offset array. This may corrupt memory and cause the application to crash. The extent of the impact has not been demonstrated by a runtime test.

---

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