CVE-2023-46932Public exploitNetwork attack vector

Code execution or crash via unchecked AVI header

Published Dec 9, 2023 · Updated May 27, 2025

Heap buffer overflow in GPAC MP4Box 2.3-DEV-rev617-g671976fcc-master allows attackers to execute code or crash the process. avi_parse_input_file calls str2ulong on four bytes at hdrl_data+i+4 without first ensuring that the header buffer contains those bytes. Processing the supplied malformed AVI input reaches a one-byte read beyond the heap allocation; the published proof of concept demonstrates a crash.

CVSS severity9.8
Critical
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in GPAC MP4Box 2.3-DEV-rev617-g671976fcc-master allows attackers to execute code or crash the process. avi_parse_input_file calls str2ulong on four bytes at hdrl_data+i+4 without first ensuring that the header buffer contains those bytes. Processing the supplied malformed AVI input reaches a one-byte read beyond the heap allocation; the published proof of concept demonstrates a crash.

The record

CVE
CVE-2023-46932
Published
Dec 9, 2023
Updated
May 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2023CVE publishedPublication date reported by the CVE source.
  2. May 27, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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