CVE-2024-32228Public exploit

Process crash via invalid HEVC film-grain metadata

Published Jul 1, 2024 · Updated Aug 2, 2024

Buffer overflow in FFmpeg 7.0 allows local users to crash the process by decoding a file with invalid HEVC film-grain metadata. In libavcodec/hevcdec.c, hevc_frame_start accepted metadata that passed one support check but failed av_film_grain_params_select, leaving hevc_frame_end with an invalid film-grain selection. Exploitation requires access to make the application decode the crafted media; the demonstrated consequence is a segmentation-fault crash, not proven code execution.

CVSS severity6.6
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in FFmpeg 7.0 allows local users to crash the process by decoding a file with invalid HEVC film-grain metadata. In libavcodec/hevcdec.c, hevc_frame_start accepted metadata that passed one support check but failed av_film_grain_params_select, leaving hevc_frame_end with an invalid film-grain selection. Exploitation requires access to make the application decode the crafted media; the demonstrated consequence is a segmentation-fault crash, not proven code execution.

The record

CVE
CVE-2024-32228
Published
Jul 1, 2024
Updated
Aug 2, 2024
Vendor
FFmpeg
Product
FFmpeg
Classifications
CWE-121, CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

FFmpeg · FFmpegversion=7.0

Published CVSS scores

6.6CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

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Technologies

Your stack

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Your stack

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