CVE-2026-42477

A heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows user-assisted attackers to cause a denial of service or obtain sensitive information by persuading a victim to open a crafted OBJ file. The issue occurs because Standard_ReadLineBuffer::ReadLine() can return a 1-byte buffer for a minimal OBJ line, and RWObj_Reader::read() calls pushIndices(aLine + 2) without validating the buffer length.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:opencascade:open_cascade_technology::::::::
	cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:beta1::::::
	cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc1::::::
	cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc2::::::
	cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc3::::::
	cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc4::::::
	cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc5::::::

History

No history.

Information

Published : 2026-05-01 15:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42477

Mitre link : CVE-2026-42477

CVE.ORG link : CVE-2026-42477

JSON object : View

Products Affected

opencascade

open_cascade_technology

CWE

CWE-125

Out-of-bounds Read

CWE-122

Heap-based Buffer Overflow

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