CVE-2026-33144— GPAC MP4Box Heap Buffer Overflow Write in gf_xml_parse_bit_sequence_bs (NHML BS Parsing)
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-33144
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
GPAC MP4Box Heap Buffer Overflow Write in gf_xml_parse_bit_sequence_bs (NHML BS Parsing)
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
GPAC MP4Box 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GPAC MP4Box是多媒体打包器。它主要用于处理 ISOBMF 文件（例如 MP4、3GP），但也可用于从AVI, MPG, MKV, MPEG-2 TS等容器文件中导入/导出媒体。 GPAC MP4Box 86b0e36之前版本存在安全漏洞，该漏洞源于处理特制NHML文件时gf_xml_parse_bit_sequence_bs函数存在堆缓冲区溢出，可能导致越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-33144
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-33144
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same product: gpac
- CVE-2026-8124
GPAC box_code_base.c sidx_box_read allocation of resources - CVE-2026-7135
GPAC MP4Box box_code_base.c elng_box_read out-of-bounds - CVE-2026-4185
GPAC MP4Box swf_parse.c swf_def_bits_jpeg stack-based overfl - CVE-2026-4016
GPAC SVG Parser load_svg.c svgin_process out-of-bounds write - CVE-2026-4015
GPAC TeXML File load_text.c txtin_process_texml stack-based
V. Comments for CVE-2026-33144
No comments yet