CVE-2026-42480

A stack-based out-of-bounds read vulnerability in VrmlData_Scene::ReadLine in the VRML 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 the quoted-string escape handler uses ptr[++anOffset] without proper bounds checking, which can read past the end of a fixed-size stack buffer.

Score

CVSS 3.1 5.5 Medium

Status

Analyzed - cve@mitre.org

Published

2026-05-01

Last modified

2026-05-01

Weaknesses

CWE-125

Affected products

• Open Cascade Technology (Opencascade)

References

• https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a