CVE-2023-46426Public exploitNetwork attack vector

Code execution via undersized SWF JPEG header

Published Mar 9, 2024 · Updated Aug 5, 2024

Heap-based buffer overflow in GPAC 2.3-DEV-rev588-g7edc40fee-master allows remote attackers to execute code or crash MP4Box via a crafted SWF file. The SWF JPEG handler accepts a one-byte JPEG header, subtracts two from its unsigned size, and passes the underflowed length to gf_fwrite, causing an out-of-bounds heap read. Exploitation requires the target to open the malicious file or access a malicious page; successful abuse can crash the process or execute code.

CVSS severity8.8
High
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in GPAC 2.3-DEV-rev588-g7edc40fee-master allows remote attackers to execute code or crash MP4Box via a crafted SWF file. The SWF JPEG handler accepts a one-byte JPEG header, subtracts two from its unsigned size, and passes the underflowed length to gf_fwrite, causing an out-of-bounds heap read. Exploitation requires the target to open the malicious file or access a malicious page; successful abuse can crash the process or execute code.

The record

CVE
CVE-2023-46426
Published
Mar 9, 2024
Updated
Aug 5, 2024
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-122, CAPEC-92, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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-rev588-g7edc40fee-master

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GPAC Project · GPACversion=2.3-DEV-rev588-g7edc40fee-master

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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-122Heap-based Buffer Overflow
CAPEC-92Forced Integer Overflow
T1204.002User Execution: Malicious File

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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