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VulnerabilityPublished Updated

CVE-2026-121611: Gst plugins bad1.0 · A flaw was found in GStreamer's gst-plugins-bad package

Affects gst-plugins-bad1.0Source GCVE Database

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Authoritative record:CVE-2026-121611· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 13 Nov 2026, 22:04 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 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 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10gst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=stonkingOther threatsAffected
  • 1.28.2-1ubuntu1 – 1.28.6-1ubuntu1
5 affected builds
Fixed in–
Ubuntu 26.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=resoluteOther threatsAffected
  • 1.26.5-1ubuntu2 – 1.28.2-1ubuntu1.2
9 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/nobleOther threatsAffected
  • 1.22.4-1ubuntu1 – 1.24.2-1ubuntu4+esm2
9 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 1.18.5-1ubuntu1 – 1.20.3-0ubuntu1.1+esm3
8 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/focalOther threatsAffected
  • 1.16.1-1ubuntu1 – 1.16.3-0ubuntu1.1+esm2
14 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-apps/bionicOther threatsAffected
  • 1.12.3-1ubuntu1 – 1.14.5-0ubuntu1~18.04.1+esm2
13 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

A flaw was found in GStreamer's gst-plugins-bad package. A use of uninitialized memory vulnerability exists in the H.265 (HEVC) bitstream parser when processing Video Parameter Sets that declare more than one HRD (Hypothetical Reference Decoder) parameter set. A remote attacker could exploit this by providing a crafted H.265 media file or stream that, when processed by an application using GStreamer, causes unpredictable parser behavior and may crash the application. This can lead to a denial of service for any application using GStreamer to play back H.265 content.

References

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