GStreamer DVB Subtitles Out-Of-Bounds Write Remote Code Execution Vulnerability

March 6th, 2026
ZDI-26-161 ZDI-CAN-28838

CVE ID

CVE-2026-2923

CVSS Score

7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

GStreamer

Affected Products

GStreamer

Vulnerability Details

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 handling of coordinates. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

GStreamer has issued an update to correct this vulnerability. More details can be found at:
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/3b8253f447bcc9831dbf643d2c69b205fedbe086

Disclosure Timeline

  • 2026-02-11 - Vulnerability reported to vendor
  • 2026-03-06 - Coordinated public release of advisory
  • 2026-03-06 - Advisory Updated

Credit

Anonymous

Back to Advisories