CVE-2026-30999

Severity CVSS v4.0:

Pending analysis

Type:

CWE-122 Heap-based Buffer Overflow

Publication date:

13/04/2026

Last modified:

13/04/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

References to Advisories, Solutions, and Tools

https://excellent-oatmeal-319.notion.site/CVE-2026-30999-Memory-Leak-e0d88ac53e2e42c1b5ef9aa3497e27b6
https://ffmpeg.org/doxygen/7.0/zmqsend_8c_source.html
https://github.com/FFmpeg/FFmpeg/blob/master/tools/zmqsend.c
https://www.ffmpeg.org/download.html