How severe is CVE-2025-3887?

This vulnerability has a severity rating of HIGH with a CVSS score of 8.8 out of 10.

What type of vulnerability is CVE-2025-3887?

This is classified as CWE-121, which is a common weakness in software security.

CVE-2025-3887 - HIGH Severity | CVSS 8.8

Vulnerability Description

GStreamer H265 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 H265 slice headers. 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-26596.

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