Vulnerability Description
Open CASCADE Technology (OCCT) V8_0_0_rc5 contains multiple vulnerabilities in its IGES and STEP file parsers that can be triggered by crafted IGES or STEP files. These issues include an out-of-bounds read in Geom2d_BSplineCurve::EvalD0 during IGES B-spline curve evaluation, an out-of-bounds read in MakeBSplineCurveCommon during STEP B-spline curve construction, and infinite recursion in StepShape_OrientedEdge::EdgeStart when processing a self-referential OrientedEdge entity. Successful exploitation may result in denial of service or unintended memory disclosure.
CVSS Score
MEDIUM
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-2026-42481?
CVE-2026-42481 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Open CASCADE Technology (OCCT) V8_0_0_rc5 contains multiple vulnerabilities in its IGES and STEP file parsers that can be triggered by crafted IGES or STEP files. These issues include an out-of-bounds...
How severe is CVE-2026-42481?
CVE-2026-42481 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42481?
Check the references section above for vendor advisories and patch information. Affected products include: Opencascade Open Cascade Technology.