CVE-2023-2840Public exploit

Process crash via unchecked OD-frame parse failure

Published May 22, 2023 · Updated Jan 21, 2025

NULL pointer dereference in GPAC before 2.2.2 allows local users to crash MP4Box by dashing a crafted media file. gf_isom_fragment_add_sample_ex fails to stop when Media_ParseODFrame returns no OD sample, then dereferences the null result while rewriting OD frames. Local execution of MP4Box against attacker-supplied media is required; the demonstrated consequence is a process crash, with no demonstrated code execution.

CVSS severity9.8
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in GPAC before 2.2.2 allows local users to crash MP4Box by dashing a crafted media file. gf_isom_fragment_add_sample_ex fails to stop when Media_ParseODFrame returns no OD sample, then dereferences the null result while rewriting OD frames. Local execution of MP4Box against attacker-supplied media is required; the demonstrated consequence is a process crash, with no demonstrated code execution.

The record

CVE
CVE-2023-2840
Published
May 22, 2023
Updated
Jan 21, 2025
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 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?

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

  1. Affected versionversion=unspecified <2.2.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

GPAC Project · GPACversion=unspecified <2.2.2

Published CVSS scores

5.3Huntr CNACVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NVDCVSS: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)
Vectorlocal
Privilegesauthenticated
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

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Your stack

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