CVE-2023-29576Public exploit

Process crash via invalid fragment atom dereference

Published Apr 11, 2023 · Updated Feb 10, 2025

Memory-safety flaw in Bento4 1.6.0-639 allows context-dependent attackers to crash mp4decrypt through a crafted MP4 file. During fragment processing, AP4_Processor reaches AP4_TrunAtom::SetDataOffset with an invalid atom object, so the inline member assignment writes near the null page and terminates the process. Exploitation requires a user or local workflow to process the crafted file and interrupts only that Bento4 process.

CVSS severity5.5
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-safety flaw in Bento4 1.6.0-639 allows context-dependent attackers to crash mp4decrypt through a crafted MP4 file. During fragment processing, AP4_Processor reaches AP4_TrunAtom::SetDataOffset with an invalid atom object, so the inline member assignment writes near the null page and terminates the process. Exploitation requires a user or local workflow to process the crafted file and interrupts only that Bento4 process.

The record

CVE
CVE-2023-29576
Published
Apr 11, 2023
Updated
Feb 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/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)
Vectorlocal
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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