CVE-2025-6663

NONE EPSS 24.3%
Published Jul 7, 202511mo ago · Modified Jun 17, 20261w ago
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Published Jul 7, 2025 11mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

Threat Intelligence

EPSS Exploit Probability
24.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-121
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
gstreamergstreamer*≥1.26.0  –  <1.26.3

References 2

  • gitlab.freedesktop.org https://gitlab.freedesktop.org/tpm/gstreamer/-/commit/eedd01ac3dfeb60e36a44bb61a6d0418454e8416
    Patch
  • zerodayinitiative.com https://www.zerodayinitiative.com/advisories/ZDI-25-467/
    Third Party Advisory

Remediation

  • gitlab.freedesktop.org https://gitlab.freedesktop.org/tpm/gstreamer/-/commit/eedd01ac3dfeb60e36a44bb61a6d0418454e8416
    Patch