EUVD-2026-13782CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H
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3Description
GPAC is an open-source multimedia framework. Prior to commit 86b0e36, a heap-based buffer overflow (write) vulnerability was discovered in GPAC MP4Box. The vulnerability exists in the gf_xml_parse_bit_sequence_bs function in utils/xml_bin_custom.c when processing a crafted NHML file containing malicious <BS> (BitSequence) elements. An attacker can exploit this by providing a specially crafted NHML file, causing an out-of-bounds write on the heap. This issue has been via commit 86b0e36.
Analysis
Heap-based buffer overflow in GPAC MP4Box's XML parsing function allows local attackers to corrupt memory and potentially crash the application or achieve code execution by crafting malicious NHML files with specially formatted BitSequence elements. The vulnerability affects systems processing untrusted multimedia files and remains unpatched as of this advisory. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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