CVE-2022-3667Public exploitNetwork attack vector

Process crash via underflowed memory-stream write

Published Oct 26, 2022 · Updated Apr 14, 2025

Heap-based buffer overflow in Bento4 mp42aac allows remote attackers to crash the process by supplying a crafted MP4 file. AP4_MemoryByteStream::WritePartial passes an underflowed 32-bit write length of 4,294,967,288 to memcpy after parsing sample-group data. No authentication is required, but mp42aac must process the malicious file; the published demonstration aborts under AddressSanitizer.

CVSS severity7.3
High
EPSS probability1.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Bento4 mp42aac allows remote attackers to crash the process by supplying a crafted MP4 file. AP4_MemoryByteStream::WritePartial passes an underflowed 32-bit write length of 4,294,967,288 to memcpy after parsing sample-group data. No authentication is required, but mp42aac must process the malicious file; the published demonstration aborts under AddressSanitizer.

The record

CVE
CVE-2022-3667
Published
Oct 26, 2022
Updated
Apr 14, 2025
Vendor
Axiomatic Systems LLC
Product
Bento4
Classifications
CWE-119, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Axiomatic Systems LLC · Bento4version=n/a

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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