CVE-2026-30999

Received Received - Intake

Heap Buffer Overflow in FFmpeg v8.0.1 Causes DoS

Publication date: 2026-04-13

Last updated on: 2026-04-23

Assigner: MITRE

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-13

Last Modified

2026-04-23

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-30999

EUVD

EUVD-2026-21976

Affected Vendors & Products

Vendor	Product	Version / Range
ffmpeg	ffmpeg	to 8.0.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Compliance Impact

The provided information does not specify any direct impact of this heap buffer overflow vulnerability in FFmpeg v8.0.1 on compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

This vulnerability is a heap buffer overflow located in the av_bprint_finalize() function of FFmpeg version 8.0.1. It occurs when the function processes crafted input that exceeds the allocated buffer size, leading to memory corruption.

An attacker can exploit this flaw by providing specially crafted input to FFmpeg, which triggers the overflow.

Impact Analysis

The primary impact of this vulnerability is that it allows an attacker to cause a Denial of Service (DoS) condition. This means the affected FFmpeg application or service could crash or become unresponsive when processing malicious input.

Mitigation Strategies

To mitigate this vulnerability, you should update FFmpeg to a version that has addressed the heap buffer overflow issue in the av_bprint_finalize() function. Since the vulnerability affects FFmpeg version 8.0.1, upgrading to a later version, such as 8.1 or newer, is recommended.

You can download the latest FFmpeg source code or binaries from the official FFmpeg website or trusted package repositories.

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