CVE-2026-30999

PoC —

CVSS 3.1

7.5 high

EPSS

<1%p38

Published

Apr 13, 2026 (Apr 13, 2026)

Modified

Jun 17, 2026

Description

A heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.

Vendors: ffmpeg
Products: ffmpeg
Weakness: CWE-122
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

In the news1 stories

USN-8750-1: FFmpeg vulnerabilities

Ubuntu USN-8750-1 fixes multiple FFmpeg memory-handling flaws that allow denial of service via crafted files.

Ubuntu Security Notice USN-8750-1 patches several FFmpeg vulnerabilities related to incorrect memory operations, reported by Seung Min Shin, Xinghang Lv, and others. If a user or automated system is tricked into opening a specially crafted file, an attacker could cause a denial of service. Affected CVEs include CVE-2026-12706, CVE-2026-30999, and CVE-2026-58049.

Ubuntu Security NoticesSep 14, 03:25 UTC · 1d agoAdvisory CVE-2026-12706 CVE-2026-30999 CVE-2026-58049