CVE-2023-46927Public exploit

Process crash via zero-count sample table overwrite

Published Nov 1, 2023 · Updated Sep 12, 2024

Heap-buffer overflow in GPAC MP4Box 2.3-DEV-rev605-gfc9e29089-master allows local users to crash the process via a crafted media import. In gf_isom_use_compact_size, a nonzero sampleSize with a zero sampleCount allocates a zero-byte sizes table and then clears four bytes beyond it. Processing the input through MP4Box's -add path is required; published evidence demonstrates a process abort but not code execution.

CVSS severity5.5
Medium
EPSS probability0.21%
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-rev605-gfc9e29089-master allows local users to crash the process via a crafted media import. In gf_isom_use_compact_size, a nonzero sampleSize with a zero sampleCount allocates a zero-byte sizes table and then clears four bytes beyond it. Processing the input through MP4Box's -add path is required; published evidence demonstrates a process abort but not code execution.

The record

CVE
CVE-2023-46927
Published
Nov 1, 2023
Updated
Sep 12, 2024
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-787, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.3-dev-rev605-gfc9e29089-master

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

GPAC Project · GPACversion=2.3-dev-rev605-gfc9e29089-master

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.

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

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-787Out-of-bounds Write
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

  • poc1gpacproof of concept · demonstrated

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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