SEPTEMBER 20, 2026
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Case File

CVE-2026-5056

HIGH · CVSS 7.8 EPSS 0.40% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-29 · Last synced 2026-08-28

CyberRota Analysis

AI-Generated

A stack-based buffer overflow vulnerability in GStreamer’s qtdemux component allows remote attackers to execute arbitrary code on affected systems by exploiting improper validation of user-supplied data during the parsing of UncompressedFrameConfigBox structures. This flaw poses a significant risk, particularly for applications that utilize GStreamer for media processing, as it could lead to full system compromise. Organizations using GStreamer should prioritize patching this vulnerability to mitigate potential remote code execution threats.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-5056
Severity
HIGH
CVSS
7.8
EPSS
0.40%

Original NVD Description

GStreamer qtdemux 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 UncompressedFrameConfigBox structures. 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-29392.