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CVE-2026-9567

GPAC MP4Box isom_intern.c MergeFragment null pointer dereference

CVSS 4.8 MEDIUMEPSS 0.1%CWE-404CWE-476
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
n/a · GPAC
public PoCs found — 1
cve_referencegithub.com/user-attachments/files/27196918/poc.zipunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/gpac/gpac/https://github.com/gpac/gpac/issues/3549https://github.com/makesoftwaresafe/gpac/commit/525bf1af642c30af04e4df5345e6d798c0a4d8a1https://github.com/user-attachments/files/27196918/poc.ziphttps://vuldb.com/submit/816075https://vuldb.com/vuln/365629https://vuldb.com/vuln/365629/cti