CVE-2026-3086CWE-787

GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability

High · published March 13, 2026

CVSS v3.0
7.8
EPSS
0%
Percentile
24.8
In the wild
Unconfirmed
What it is

GStreamer H.266 Codec Parser Out-Of-Bounds Write 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 processing of APS units. 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. Was ZDI-CAN-28911.

The record
Technical detail
CVSS v3.0
7.8 · HIGH
Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00329 · 24.8th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-03-13T20:40Z
EPSS history
Timeline
  • 13 MAR 20:40Z
    GStreamer H.266 Codec Parser Out-Of-Bounds Write Remote Code Execution Vulnerability
    cvelistv5