What is CVE-2026-30998?

CVE-2026-30998 is a high-severity vulnerability in Ffmpeg, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-04-13.

How severe is CVE-2026-30998?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Ffmpeg

CVE-2026-30998

An improper resource deallocation and closure vulnerability in the tools/zmqsend.c component of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via supplying a crafted input file.

Vulnerability class: DoS (Denial of Service)

Published 2026-04-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003

Affected products

Ffmpeg

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/FFmpeg/FFmpeg/blob/master/tools/zmqsend.c (Product)
ffmpeg.org/doxygen/7.0/zmqsend_8c_source.html (Product)
excellent-oatmeal-319.notion.site/CVE-2026-30998-Resource-Leak-3265a71f9cca4dc5… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-30998?: CVE-2026-30998 is a high-severity vulnerability in Ffmpeg, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-04-13.
How severe is CVE-2026-30998?: High severity. CVSS v3 base score is 7.5 out of 10.