CVE-2026-108538

MEDIUM 6.3

GPAC MP4Box os_thread.c gf_mx_v use after free

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-416 CWE-119
Vendor	n/a
Product	gpac
Published	Oct 11, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / GPAC

26.07

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/416193 vuldb.com: https://vuldb.com/vuln/416193/cti vuldb.com: https://vuldb.com/cve/CVE-2026-108538 vuldb.com: https://vuldb.com/submit/941979 github.com: https://github.com/user-attachments/files/31270809/PoC.zip

Credits

🔍 ziiiro (VulDB User) VulDB CNA Team