CVE-2025-3887HIGH 8.8EPSS p48.6%

CVE-2025-3887CVE-2025-3887

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.

Scoring

CVSS 3.08.8 (HIGH)
VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS0.71% probability of exploitation · percentile 48.6% · 2026-06-19T12:03:05Z
Published2025-05-22
Last modified2026-03-17

Underlying weaknesses· 2

CWE-121CWE-787

References

  1. https://www.zerodayinitiative.com/advisories/ZDI-25-267/
  2. https://lists.debian.org/debian-lts-announce/2025/06/msg00017.html

2

TypeTargetConfidenceTier
WeaknessStack-based Buffer Overflowcwe-1210%live
WeaknessOut-of-bounds Writecwe-7870%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.