CVE-2025-6663
Fixed in a distro release EPSS <1%CVSS 7.8
GStreamer H266 Codec Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of H266 sei messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27381.
Products: GStreamer
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 13 | gst-plugins-bad1.0 | 1.26.2-3 |
| Debian 14 | gst-plugins-bad1.0 | 1.26.2-3 |
| Ubuntu Pro 14.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 16.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 18.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 20.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 22.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 24.04 LTS | gst-plugins-bad1.0 | no fix |