Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opencascade | Open Cascade Technology | <= 7.9.3 |
Related Weaknesses (CWE)
References
- https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94aThird Party Advisory
FAQ
What is CVE-2026-42477?
CVE-2026-42477 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 o...
How severe is CVE-2026-42477?
CVE-2026-42477 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42477?
Check the references section above for vendor advisories and patch information. Affected products include: Opencascade Open Cascade Technology.