CVE-2026-9567 Details
Description
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.
A null pointer dereference vulnerability has been identified in GPAC versions prior to 2.4.0, specifically within the MP4Box component. The issue arises in the MergeFragment function, located in src/isomedia/isom_intern.c. This vulnerability can be exploited locally, leading to a crash by passing a null pointer to a memory function that expects a non-null argument. The vulnerability has been publicly disclosed and exploited.
Users are advised to update to GPAC version 2.4.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 26, 2026CISA-ADP
Assessed May 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/gpac/gpac/ | [email protected] | Source CodeVendor |
| https://github.com/gpac/gpac/issues/3549 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/makesoftwaresafe/gpac/commit/525bf1af642c30af04e4df5345e6d798c0a4d8a1 | [email protected] | Source CodeVendor |
| https://github.com/user-attachments/files/27196918/poc.zip | [email protected] | Broken LinkExploit |
| https://vuldb.com/submit/816075 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/365629 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/365629/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| GPAC | <= 2.4.0 (semver) |
CPE
Remediation
| |
| GPAC MP4Box | <= 2.4.0 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 26, 2026 | New CVE Received | [email protected] |