CVE-2026-5235 | Axiomatic Bento4 up to 1.6.0-641 MP4 File Parser Ap4Dac4Atom.cpp AP4_BitReader::ReadCache heap-based overflow (Issue 1058)

VDB-354386 · CVE-2026-5235 · ISSUE 1058 AXIOMATIC BENTO4 UP TO 1.6.0-641 MP4 FILE PARSER AP4DAC4ATOM.CPP AP4_BITREADER::READCACHE HEAP-BASED OVERFLOW HISTORYDIFFRELATEJSONXMLCTI Summaryinfo A vulnerability was found in Axiomatic Bento4 up to 1.6.0-641 and classified as critical. Affected is the function AP4_BitReader::ReadCache of the file Ap4Dac4Atom.cpp of the component MP4 File Parser. Such manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2026-5235. The attack needs to be performed locally. Additionally, an exploit exists. The project was informed of the problem early through an issue report but has not responded yet. Detailsinfo A vulnerability, which was classified as critical, has been found in Axiomatic Bento4 up to 1.6.0-641. Affected by this issue is the function AP4_BitReader::ReadCache of the file Ap4Dac4Atom.cpp of the component MP4 File Parser. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The advisory is available at github.com. This vulnerability is handled as CVE-2026-5235. The exploitation is known to be easy. Local access is required to approach this attack. Technical details as well as a public exploit are known. The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Multimedia Player Software Vendor Axiomatic Name Bento4 Version 1.6.0-641 License free CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 4.8 VulDB Base Score: 5.3 VulDB Temp Score: 4.8 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Heap-based overflow CWE: CWE-122 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/31/2026 Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Advisory: 1058 Status: Not defined CVE: CVE-2026-5235 (🔒) GCVE (CVE): GCVE-0-2026-5235 GCVE (VulDB): GCVE-100-354386 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/31/2026 16:14 Changes: 03/31/2026 16:14 (59) Complete: 🔍 Submitter: breakingbad Cache ID: 99:563:101 Submitinfo Accepted Submit #780472: Bento4 <=1.6.0-641 Memory Corruption (by breakingbad) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸