CVE-2022-3109Network attack vector

Decoder crash via unchecked allocation failure

Published Dec 16, 2022 · Updated Apr 16, 2025

NULL pointer dereference in FFmpeg before 5.1 allows remote attackers to crash a decoder via VP3 media under memory pressure. In vp3_decode_frame, libavcodec/vp3.c stores av_malloc's result in s->edge_emu_buffer and continues decoding without rejecting a NULL result. Exploitation requires VP3 input and allocation failure; the bounded consequence is termination of the decoding process, not data access or modification.

CVSS severity7.5
High
EPSS probability1.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in FFmpeg before 5.1 allows remote attackers to crash a decoder via VP3 media under memory pressure. In vp3_decode_frame, libavcodec/vp3.c stores av_malloc's result in s->edge_emu_buffer and continues decoding without rejecting a NULL result. Exploitation requires VP3 input and allocation failure; the bounded consequence is termination of the decoding process, not data access or modification.

The record

CVE
CVE-2022-3109
Published
Dec 16, 2022
Updated
Apr 16, 2025
Vendor
FFmpeg
Product
FFmpeg
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=FFmpeg 5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FFmpeg · FFmpegversion=FFmpeg 5.1

Published CVSS scores

7.5National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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