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GPAC MP4Box CVE-2026-90611

| EUVDEUVD-2026-77166 LOW
Reachable Assertion (CWE-617)
2026-09-14 VulDB GHSA-h747-3q39-r5rp
Denial Of Service Gpac N A
1.9
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
1.9 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
3.3 LOW

Local execution only, low privileges required to run MP4Box; only process availability impact, no confidentiality or integrity effects.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Severity Changed
Sep 14, 2026 - 02:22 NVD
MEDIUM LOW
CVSS changed
Sep 14, 2026 - 02:22 NVD
4.8 (MEDIUM) 1.9 (LOW)
Source Code Evidence Fetched
Sep 14, 2026 - 01:48 vuln.today
Analysis Generated
Sep 14, 2026 - 01:48 vuln.today
CVE Published
Sep 14, 2026 - 01:00 cve.org
MEDIUM 4.8

DescriptionCVE.org

A vulnerability was determined in GPAC up to f1219cde. This impacts the function xmt_parse_element of the file scene_manager/loader_xmt.c of the component MP4Box. Executing a manipulation can lead to reachable assertion. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.23 will fix this issue. This patch is called afca1f1181668d85941d51ed1adf647807d5d975. It is recommended to upgrade the affected component.

AnalysisAI

Denial of service in GPAC MP4Box (up to commit f1219cde) triggers a process abort via an unconditional reachable assertion (gf_assert(0)) inside xmt_parse_element in scene_manager/loader_xmt.c when parsing a crafted XMT scene file. Local, low-privilege users can crash the process by feeding malformed input to the MP4Box command-line tool; no code execution or data leakage is possible. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Requires local access to the system (AV:L) with at least a low-privilege user account (PR:L per CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N) with score 4.8 accurately characterizes a low-severity local DoS: local access, low privileges, no confidentiality or integrity impact, only low availability impact (process crash). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade GPAC to version abi-16.23 or later, which includes the fix from commit afca1f1181668d85941d51ed1adf647807d5d975 (https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-90611 vulnerability details – vuln.today
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