What is CVE-2026-3086?

CVE-2026-3086 is a high-severity vulnerability in Gstreamer, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-03-13.

How severe is CVE-2026-3086?

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

Buffer overflow in Gstreamer

CVE-2026-3086

GStreamer H.266 Codec Parser Out-Of-Bounds Write 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…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (28.6th 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 1c6e163aa33962f5ee4a87d29319ccdd5cb67612

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

ZDI-26-170 (x_research-advisory)
vendor-provided URL (vendor-advisory)

Frequently asked questions

What is CVE-2026-3086?: CVE-2026-3086 is a high-severity vulnerability in Gstreamer, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-03-13.
How severe is CVE-2026-3086?: High severity. CVSS v3 base score is 7.8 out of 10.