CVE-2022-40737Public exploitNetwork attack vector

Crash via out-of-bounds fwrite read

Published Sep 15, 2022 · Updated Aug 3, 2024

Out-of-bounds read in Axiomatic Systems Bento4 through 1.6.0-639 allows context-dependent attackers to crash mp4split via a crafted MP4 file. AP4_HdlrAtom::WriteFields reaches AP4_StdcFileByteStream::WritePartial with a one-byte empty-string buffer and a larger write length, causing fwrite to read beyond the buffer. Processing the crafted file is required; the demonstrated consequence is an AddressSanitizer abort and loss of the mp4split process, not data disclosure.

CVSS severity6.5
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Axiomatic Systems Bento4 through 1.6.0-639 allows context-dependent attackers to crash mp4split via a crafted MP4 file. AP4_HdlrAtom::WriteFields reaches AP4_StdcFileByteStream::WritePartial with a one-byte empty-string buffer and a larger write length, causing fwrite to read beyond the buffer. Processing the crafted file is required; the demonstrated consequence is an AddressSanitizer abort and loss of the mp4split process, not data disclosure.

The record

CVE
CVE-2022-40737
Published
Sep 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 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-125Out-of-bounds Read
T1204.002User Execution: Malicious File

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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