Is CVE-2026-125707 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-125707 being exploited in the wild.

How severe is CVE-2026-125707?

Medium severity, with a CVSS score of 6.1, published 10 November 2026.

Is there a fix for CVE-2026-125707?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-125707 attacked?

It is attacked over the network or with local access, in a software library.

Am I affected by CVE-2026-125707?

Check whether you run Gstreamer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-125707: GStreamer MXF demuxer off-by-one buffer write

CVE-2026-125707 · Severity: medium · CVSS 6.1 · Published 2026-11-10

GStreamer is a multimedia framework used by many applications to process audio and video files. A flaw in its MXF (Material eXchange Format) file parser allows a crafted file to write one byte past the intended boundary of an array, corrupting memory and crashing the application. While a demonstration of more severe impact has not been confirmed, this vulnerability could potentially enable code execution depending on the memory layout.

Technologies: Gstreamer. Vendors: Gstreamer.

Quick answers

Is CVE-2026-125707 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-125707 being exploited in the wild.
How severe is CVE-2026-125707?: Medium severity, with a CVSS score of 6.1, published 10 November 2026.
Which products and versions are affected?: GStreamer GStreamer.
Is there a fix for CVE-2026-125707?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-125707 attacked?: It is attacked over the network or with local access, in a software library.
Am I affected by CVE-2026-125707?: Check whether you run Gstreamer. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An off-by-one bounds check error in the MXF demuxer allows a one-byte write past the logical end of a temporal offset array when processing a specially crafted MXF file. This buffer overflow corrupts adjacent memory and causes the application to crash. The vulnerability requires the application to process a malicious MXF file, with no authentication or user privilege elevation required beyond opening the file.

Affected products

GStreamer GStreamer

Timeline

2026-11-10: disclosed

References

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