PT-2026-43373 · Mp4Box+1 · Mp4Box+1

Fczhang · CVE-2026-9567 · Published 2026-05-26 · Updated 2026-05-26

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions GPAC versions prior to 2.4.1

Description A security flaw in the MP4Box component allows for a null pointer dereference, which occurs when the MergeFragment() function in the src/isomedia/isom intern.c file is manipulated. This issue requires local access to be exploited.

Recommendations Apply patch 525bf1af642c30af04e4df5345e6d798c0a4d8a1 to resolve the issue. As a temporary workaround, restrict access to the MergeFragment() function within the MP4Box component to minimize the risk of exploitation.

Exploit

Fix

NULL Pointer Dereference

Improper Resource Release

Weakness Enumeration

CWE-476

CWE-404

Related Identifiers

BDU:2026-09998

CVE-2026-9567

Affected Products

Gpac

Mp4Box

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9567.json · Exploit
• 🔥❌ https://github.com/user-attachments/files/27196918/poc.zip · Exploit, Deleted
• https://bdu.fstec.ru/vul/2026-09998 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-9567 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-9567 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-9567 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-9567 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-9567 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-9567 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-9567 · Vendor Advisory
• https://github.com/makesoftwaresafe/gpac/commit/525bf1af642c30af04e4df5345e6d798c0a4d8a1 · Patch
• https://github.com/Gpac/Gpac/issues/3549 · Note
• https://github.com/Gpac/Gpac · Note
• https://github.com/gpac/gpac/issues/3549 · Note
• https://github.com/gpac/gpac/commit/525bf1af642c30af04e4df5345e6d798c0a4d8a1 · Note