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CVE-2025-6663

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CVE-2025-6663

Published: Jul 7, 2025

Modified: Jul 7, 2025

PUBLISHED

CVSS v3.0

7.8

HIGH

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.

VendorProductVersions

GStreamer

GStreamer

affected
97fec43422c4b62d569957d721c899bdaaa9da61

Weaknesses (CWE)

CWE-121

CVSS v3.0 Details

CVSS v3.0 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

ZDI-25-467
x_research-advisory
vendor-provided URL
vendor-advisory

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