CVE-2026-9567

LOW 3.3

GPAC MP4Box isom_intern.c MergeFragment null pointer dereference

CVSS Score

3.3

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in GPAC up to 2.4.0. Affected is the function MergeFragment of the file src/isomedia/isom_intern.c of the component MP4Box. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been released to the public and may be used for attacks. The patch is identified as 525bf1af642c30af04e4df5345e6d798c0a4d8a1. It is advisable to implement a patch to correct this issue.

CWE	CWE-476 CWE-404
Vendor	n/a
Product	gpac
Published	May 26, 2026
Last Updated	May 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / GPAC

2.0 2.1 2.2 2.3 2.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/365629 vuldb.com: https://vuldb.com/vuln/365629/cti vuldb.com: https://vuldb.com/submit/816075 github.com: https://github.com/gpac/gpac/issues/3549 github.com: https://github.com/user-attachments/files/27196918/poc.zip github.com: https://github.com/makesoftwaresafe/gpac/commit/525bf1af642c30af04e4df5345e6d798c0a4d8a1 github.com: https://github.com/gpac/gpac/

Credits

🔍 fczhang (VulDB User)