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GPAC MP4Box CVE-2026-90685

| EUVDEUVD-2026-77204 LOW
Reachable Assertion (CWE-617)
2026-09-14 VulDB GHSA-wx52-cwmq-x76w
Denial Of Service Gpac N A
0.9
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
0.9 LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/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
2.8 LOW

Local-only, low-privilege, requires user interaction to process a crafted file; only availability impact via process abort.

3.1 AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
4.0 AV:L/AC:L/AT:N/PR:L/UI:P/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
P
Scope
X

Lifecycle Timeline

4
CVSS changed
Sep 14, 2026 - 06:22 NVD
2.4 (LOW) 0.9 (LOW)
Source Code Evidence Fetched
Sep 14, 2026 - 06:05 vuln.today
Analysis Generated
Sep 14, 2026 - 06:05 vuln.today
CVE Published
Sep 14, 2026 - 05:15 cve.org
LOW 2.4

DescriptionCVE.org

A vulnerability has been found in GPAC up to f1219cde. Affected by this issue is the function lsr_exec_command_list of the file laser/lsr_dec.c of the component MP4Box. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. Upgrading to version abi-16.23 can resolve this issue. The identifier of the patch is afca1f1181668d85941d51ed1adf647807d5d975. The affected component should be upgraded.

AnalysisAI

Reachable assertion in GPAC MP4Box up to commit f1219cde causes a process abort when a crafted LASeR/MP4 file is processed with MP4Box. The flaw resides in lsr_exec_command_list() in laser/lsr_dec.c, where gf_assert(!codec->bs) fires unconditionally if the codec bitstream handle is already open at command list entry, triggering an abort rather than a graceful error return. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) local system access with at least a low-privileged account (PR:L per CVSS); (2) user interaction - a user or automated process must invoke MP4Box on a crafted input file (UI:P per CVSS); (3) the input file must contain a LASeR scene update track that reaches lsr_exec_command_list() with the codec bitstream handle already open. … 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:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P) and score of 2.4 accurately characterize this as a low-severity, local-only denial-of-service. … 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, which contains the fix. … Detailed patch versions, workarounds, and compensating controls in full report.
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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-90685 vulnerability details – vuln.today
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