What is CVE-2025-6663?

CVE-2025-6663 is a high-severity vulnerability in Gstreamer, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-07-07.

How severe is CVE-2025-6663?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Gstreamer

CVE-2025-6663

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 req…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (24.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Gstreamer — versions 97fec43422c4b62d569957d721c899bdaaa9da61

Weakness classification (CWE)

References

zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)
zdi-disclosures@trendmicro.com (vendor-advisory, Patch)

Frequently asked questions

What is CVE-2025-6663?: CVE-2025-6663 is a high-severity vulnerability in Gstreamer, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-07-07.
How severe is CVE-2025-6663?: High severity. CVSS v3 base score is 7.8 out of 10.