Vulnerability Details CVE-2026-42481
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.1%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2026-42481
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cpe:2.3:a:opencascade:open_cascade_technology:6.5.0
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cpe:2.3:a:opencascade:open_cascade_technology:6.5.1
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cpe:2.3:a:opencascade:open_cascade_technology:6.5.2
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cpe:2.3:a:opencascade:open_cascade_technology:6.5.3
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cpe:2.3:a:opencascade:open_cascade_technology:6.5.4
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cpe:2.3:a:opencascade:open_cascade_technology:6.5.5
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cpe:2.3:a:opencascade:open_cascade_technology:6.6.0
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cpe:2.3:a:opencascade:open_cascade_technology:6.7.0
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cpe:2.3:a:opencascade:open_cascade_technology:6.7.1
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cpe:2.3:a:opencascade:open_cascade_technology:6.7.2
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cpe:2.3:a:opencascade:open_cascade_technology:6.8.0
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cpe:2.3:a:opencascade:open_cascade_technology:6.9.0
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cpe:2.3:a:opencascade:open_cascade_technology:6.9.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.0.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.0.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.1.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.2.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.3.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.4.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.5.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.5.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.5.2
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cpe:2.3:a:opencascade:open_cascade_technology:7.5.3
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cpe:2.3:a:opencascade:open_cascade_technology:7.6.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.6.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.6.2
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cpe:2.3:a:opencascade:open_cascade_technology:7.6.3
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cpe:2.3:a:opencascade:open_cascade_technology:7.7.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.7.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.7.2
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cpe:2.3:a:opencascade:open_cascade_technology:7.8.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.8.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.9.0
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cpe:2.3:a:opencascade:open_cascade_technology:7.9.1
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cpe:2.3:a:opencascade:open_cascade_technology:7.9.2
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cpe:2.3:a:opencascade:open_cascade_technology:7.9.3
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cpe:2.3:a:opencascade:open_cascade_technology:8.0.0