CVE-2026-108538

GPAC MP4Box os_thread.c gf_mx_v use after free

MEDIUM
6.3
CVSS Score
Published: October 11, 2026 at 04:45 AM UTC
Updated: October 15, 2026 at 04:17 PM UTC
1 product affected across 1 vendorGpac

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/416193
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/416193/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-108538
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/941979

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-416CWE-119

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