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2.1
CVE-2026-108538: GPAC MP4Box allows remote crash or hijack
CVE-2026-108538 · published 8 days ago
Summary
The MP4Box tool in GPAC versions up to 26.07.0 contains a coding error that can be triggered from the network, causing the program to use memory that has already been released. This can lead to the application crashing or being taken over by an attacker. Update GPAC to a version newer than 26.07.0 or apply the vendor’s patch to stop the problem.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| – | – | gpac | 26.07 |
| Ubuntu:Pro:14.04:LTS | canonical | gpac | All versions |
Original advisory text
GPAC MP4Box os_thread.c gf_mx_v use after free
A security vulnerability has been detected in GPAC up to 26.07.0. The impacted element is the function gf_mx_v of the file utils/os_thread.c of the component MP4Box. Such manipulation leads to use after free. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
References
- https://vuldb.com/cve/CVE-2026-108538
- https://vuldb.com/vuln/416193
- https://vuldb.com/vuln/416193/cti
- https://vuldb.com/submit/941979
- https://github.com/user-attachments/files/31270809/PoC.zip
- https://ubuntu.com/security/CVE-2026-108538 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-108538 Third Party Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker partial control
Type
CWE-119Buffer Overflow
CWE-416Use After Free
Timeline
Published11 Oct 2026
Updated16 Oct 2026
First seen11 Oct 2026
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