Bento4 1.6.0.0 contains an integer underflow vulnerability in the avcC and hvcC configuration atom parsers. A specially crafted MP4 file containing an atom with a declared size smaller than AP4_ATOM_HEADER_SIZE can cause AP4_AvccAtom::Create() or AP4_HvccAtom::Create() to underflow the payload-size calculation. The resulting oversized buffer operation can cause invalid or NULL pointers to be passed to the AP4_DataBuffer copy path, resulting in application termination and denial of service.
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Fixes

Solution

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Workaround

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History

Tue, 29 Sep 2026 07:15:00 +0000

Type Values Removed Values Added
Title Integer Underflow in Bento4 AVCC/HVCc Parsing Causes Denial of Service

Tue, 29 Sep 2026 05:15:00 +0000

Type Values Removed Values Added
Title Integer Underflow in Bento4 AVCC/HVCc Atom Parsers Leading to Denial of Service
Weaknesses CWE-193

Tue, 29 Sep 2026 03:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-191
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 27 Sep 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Axiomatic
Axiomatic bento4
Vendors & Products Axiomatic
Axiomatic bento4

Sat, 26 Sep 2026 03:15:00 +0000

Type Values Removed Values Added
Title Integer Underflow in Bento4 AVCC/HVCc Atom Parsers Leading to Denial of Service
Weaknesses CWE-193

Thu, 24 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description Bento4 1.6.0.0 contains an integer underflow vulnerability in the avcC and hvcC configuration atom parsers. A specially crafted MP4 file containing an atom with a declared size smaller than AP4_ATOM_HEADER_SIZE can cause AP4_AvccAtom::Create() or AP4_HvccAtom::Create() to underflow the payload-size calculation. The resulting oversized buffer operation can cause invalid or NULL pointers to be passed to the AP4_DataBuffer copy path, resulting in application termination and denial of service.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-29T02:36:24.697Z

Reserved: 2026-09-10T00:00:00.000Z

Link: CVE-2026-88377

cve-icon Vulnrichment

Updated: 2026-09-29T02:35:52.088Z

cve-icon NVD

Status : Deferred

Published: 2026-09-24T17:17:07.433

Modified: 2026-09-29T03:17:20.920

Link: CVE-2026-88377

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-29T07:00:08Z

Weaknesses