CVE-2025-3887

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.

Affected products

Almalinux, Astra Linux, Centos, Debian, Gstreamer, Linuxmint, Red Hat, Red Os

Gstreamer

< 1.26.1

Fix

Available

CVSS 3.0

8.8 HIGH

EPSS

0.7% (50th percentile)

Weakness

CWE-787, CWE-121

NVD status

Analyzed

Published

2025-05-22

No exploit for CVE-2025-3887 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.