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VulnerabilityPublished

CVE-2026-125707: Red Hat Enterprise Linux 10 · Out-of-bounds Write

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 6.1 Medium.

Data as of 10 Nov 2026, 11:50 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10gstreamer1-plugins-bad-freeAffected–Fixed in–
Red Hat Enterprise Linux 6gstreamer-plugins-bad-freeAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer1-plugins-bad-freeAffected–Fixed in–
Red Hat Enterprise Linux 7gstreamer-plugins-bad-freeAffected–Fixed in–
Red Hat Enterprise Linux 8gstreamer1-plugins-bad-freeAffected–Fixed in–
Red Hat Enterprise Linux 9gstreamer1-plugins-bad-freeAffected–Fixed in–

AI-suggested

Red Hat has deferred fixes for some affected versions under their moderate severity policy. Users should apply available updates when Red Hat releases them. As an immediate mitigation, if MXF processing is not required, set the environment variable GST_PLUGIN_FEATURE_RANK=mxfdemux:NONE before launching GStreamer applications to prevent automatic selection of the vulnerable mxfdemux plugin for untrusted files. This mitigation does not protect pipelines that explicitly instantiate mxfdemux. Monitor Red Hat advisories for updates and fixes.

Description

CVE-2026-125707 is a moderate severity vulnerability in GStreamer's MXF demuxer used in Red Hat Enterprise Linux 10 and other Red Hat streams. It involves an off-by-one bounds check error that allows a one-byte out-of-bounds write past the end of a temporal offset array when processing crafted MXF files. This memory corruption can cause application crashes. The vulnerability requires local processing of a malicious MXF file and user interaction. Red Hat has deferred fixes for some affected versions under their moderate severity policy. Mitigation includes disabling the mxfdemux plugin for untrusted files.

References

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