CVE-2026-42477 Details
Description
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.
A heap-based out-of-bounds read vulnerability has been identified in the OBJ file parser of Open CASCADE Technology (OCCT) version 8.0.0 release candidate 5. This vulnerability 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 arises because the Standard_ReadLineBuffer::ReadLine() function can return a 1-byte buffer for minimal OBJ lines, and the RWObj_Reader::read() function calls pushIndices(aLine + 2) without validating the buffer length, leading to out-of-bounds memory access.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
| CWE-122 | Heap-based Buffer Overflow | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| opencascade open cascade technology | <= 7.9.3 8.0.0 beta1 8.0.0 rc1 8.0.0 rc2 8.0.0 rc3 8.0.0 rc4 8.0.0 rc5 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 10, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | Initial Analysis | [email protected] |
| May 1, 2026 | New CVE Received | [email protected] |