CVE-2026-42478
High
Description
An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOpencascade Open Cascade Technology
PublishedMay 1, 2026
First seenMay 1, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opencascade open_cascade_technology | v ≤ 7.9.3, 8.0.0 | — |
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