CVE-2026-125707: Gst plugins bad1.0 · A flaw was found in GStreamer's MXF demuxer
Affects gst-plugins-bad1.0Source GCVE Database
Not known to be exploited · CVSS 7.1 High.
Data as of 13 Nov 2026, 22:31 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.1 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu Pro 22.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 18.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/bionicOther threats | Affected
| Fixed in– |
Ubuntu Pro 16.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps-legacy/xenialOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in updated versions of the affected software as indicated by Red Hat's advisory. Where MXF processing is not required, users can mitigate risk by setting the environment variable GST_PLUGIN_FEATURE_RANK=mxfdemux:NONE before launching GStreamer applications to prevent automatic selection of the vulnerable mxfdemux plugin. This mitigation does not protect pipelines that explicitly instantiate mxfdemux. Users should apply vendor patches when available and follow Red Hat's guidance for affected products.
Description
A vulnerability in GStreamer's MXF demuxer allows a crafted MXF file to trigger an off-by-one write past the end of a temporal offset array, potentially corrupting memory and causing application crashes. The flaw does not disclose data or allow code execution based on current analysis. The issue affects multiple versions of gst-plugins-bad1.0 and has a CVSS score of 7.1, rated as high severity. Mitigation includes disabling the mxfdemux plugin if MXF processing is not required.
References
- ubuntu.com/security/CVE-2026-125707 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-125707 (opens in a new tab)
- gstreamer.freedesktop.org/security/sa-2026-0027.html (opens in a new tab)
- gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11582 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-125707 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2569127 (opens in a new tab)