CVE-2026-3084 PUBLISHED

GStreamer H.266 Codec Parser Integer Underflow Remote Code Execution Vulnerability

Assigner: zdi
Reserved: 23.02.2026 Published: 13.03.2026 Updated: 13.03.2026

GStreamer H.266 Codec Parser Integer Underflow 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 picture partitions. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28910.

Metrics

CVSS Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 7.8

Product Status

Vendor GStreamer
Product GStreamer
Versions Default: unknown
  • Version 1c6e163aa33962f5ee4a87d29319ccdd5cb67612 is affected

References

Problem Types

  • CWE-191: Integer Underflow (Wrap or Wraparound) CWE