CVE-2026-4185

GPAC MP4Box swf_parse.c swf_def_bits_jpeg stack-based overflow

State: Published
Severity: 5.3 Medium
Published: Mar 15, 2026
Updated: Mar 17, 2026
Reserved: Mar 14, 2026

Description

A vulnerability was found in GPAC up to 2.5-DEV-rev2167-gcc9d617c0-master. This vulnerability affects the function swf_def_bits_jpeg of the file src/scene_manager/swf_parse.c of the component MP4Box. The manipulation of the argument szName results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. The patch is identified as 8961c74f87ae3fe2d3352e622f7730ca96d50cf1. A patch should be applied to remediate this issue.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-121 Stack-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
GPACn/a	2.5-DEV-rev2167-gcc9d617c0-masterAffected

References

VDB-351091 | GPAC MP4Box swf_parse.c swf_def_bits_jpeg stack-based overflowvdb-entrytechnical-description
VDB-351091 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #769840 | gpac MP4Box MP4Box - GPAC version 2.5-DEV-rev2167-gcc9d617c0-master and earlier Stack-based Buffer Overflowthird-party-advisory
https://github.com/gpac/gpac/issues/3436issue-tracking
https://github.com/PeterXukt/test_pocs/blob/main/gpac/test.swfexploit
https://github.com/gpac/gpac/commit/8961c74f87ae3fe2d3352e622f7730ca96d50cf1patch
https://github.com/gpac/gpac/product

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