CVE-2023-4681Public exploit

Process crash via null stream dereference

Published Aug 31, 2023 · Updated Sep 19, 2024

Null-pointer dereference in GPAC MP4Box before 2.3-DEV allows local users to crash the process with crafted media input. During DASH packaging, malformed inputs can leave MPEG-2 stream handles or DASH stream entries null, but parsing and iteration code dereferences them without returning or recounting the stream list. Processing an attacker-supplied file with MP4Box is required; the observed consequence is an application crash, without reported disclosure or code execution.

CVSS severity5.5
Medium
EPSS probability0.31%
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 before 2.3-DEV allows local users to crash the process with crafted media input. During DASH packaging, malformed inputs can leave MPEG-2 stream handles or DASH stream entries null, but parsing and iteration code dereferences them without returning or recounting the stream list. Processing an attacker-supplied file with MP4Box is required; the observed consequence is an application crash, without reported disclosure or code execution.

The record

CVE
CVE-2023-4681
Published
Aug 31, 2023
Updated
Sep 19, 2024
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2024Record 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?

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

  1. Affected versionversion=unspecified <2.3-DEV

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

GPAC Project · GPACversion=unspecified <2.3-DEV

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.1huntr.devCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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