CVE-2023-46929Public exploitNetwork attack vector

Application crash via null AVC configuration dereference

Published Jan 3, 2024 · Updated Jun 18, 2025

Null-pointer dereference in GPAC MP4Box 2.3-DEV-rev605-gfc9e29089-master allows attackers to crash the application with crafted media. The gf_avc_change_vui function accepts a null AVC configuration pointer and later dereferences it instead of rejecting the noncompliant bitstream. The published proof of concept requires MP4Box to import an attacker-controlled file, and the demonstrated consequence is a process abort.

CVSS severity7.5
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Null-pointer dereference in GPAC MP4Box 2.3-DEV-rev605-gfc9e29089-master allows attackers to crash the application with crafted media. The gf_avc_change_vui function accepts a null AVC configuration pointer and later dereferences it instead of rejecting the noncompliant bitstream. The published proof of concept requires MP4Box to import an attacker-controlled file, and the demonstrated consequence is a process abort.

The record

CVE
CVE-2023-46929
Published
Jan 3, 2024
Updated
Jun 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo