CVE-2026-42479

EUVD-2026-26602
An out-of-bounds read vulnerability in VrmlData_IndexedLineSet::TShape 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 coordIndex values from parsed input are used as direct array indices without validation against the size of the coordinate array during geometry processing.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
Affected Products (NVD)
VendorProductVersion
opencascadeopen_cascade_technology
𝑥
≤ 7.9.3
opencascadeopen_cascade_technology
8.0.0:beta1
opencascadeopen_cascade_technology
8.0.0:rc1
opencascadeopen_cascade_technology
8.0.0:rc2
opencascadeopen_cascade_technology
8.0.0:rc3
opencascadeopen_cascade_technology
8.0.0:rc4
opencascadeopen_cascade_technology
8.0.0:rc5
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a