CVE-2026-119727: Gst plugins bad1.0 · A flaw was found in GStreamer's gst-plugins-bad H.265 video parser
Affects gst-plugins-bad1.0Source GCVE Database
Not known to be exploited · CVSS 6.5 Medium.
Data as of 5 Nov 2026, 12:35 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.5 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 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 5 Nov 2026.
What to do
Affected software
| Product | 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– |
Ubuntu Pro 14.04 LTSgst-plugins-bad1.0pkg:deb/ubuntu/gst-plugins-bad1.0?arch=source&distro=esm-infra-legacy/trustyOther threats | Affected
| 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 H.265 video parser. When parsing a specially crafted H.265 bitstream containing a Screen Content Coding (SCC) extension with certain palette predictor initializer settings, an integer underflow in the upper-bound computation allows the parser to accept an out-of-range value for the number of palette predictor entries. This causes the parser to write beyond the end of a fixed-size array, resulting in memory corruption and an application crash. Successful exploitation requires an attacker to provide a malformed H.265 media file to a vulnerable application, and is limited to a denial-of-service impact.
References
- ubuntu.com/security/CVE-2026-119727 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-119727 (opens in a new tab)
- gstreamer.freedesktop.org/security/sa-2026-0012.html (opens in a new tab)
- gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/10902 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-119727 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2564118 (opens in a new tab)
- gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/10902.patch (opens in a new tab)