PT-2026-36477 · Unknown · Open Cascade Technology

Feng Ning · Published 2026-05-01 · Updated 2026-05-01 · CVE-2026-42478

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Open CASCADE Technology (OCCT) version V8 0 0 rc5

Description A flaw in the VRML V2.0 parser allows attackers to cause a denial of service through a specially crafted VRML file. The issue occurs within the VrmlData IndexedFaceSet::TShape function in the libTKDEVRML.so library, where malformed input can trigger the dereference of a corrupt or unvalidated pointer during shape construction.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Out of bounds Read

Weakness Enumeration

CWE-476

CWE-125

Related Identifiers

CVE-2026-42478

Affected Products

Open Cascade Technology

References · 9

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-42478 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-42478 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42478 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-42478 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-42478 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-42478 · Vendor Advisory
• https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a · Note
• https://twitter.com/infoflowcloud/status/2050255701637796118 · Twitter Post
• https://twitter.com/CVEnew/status/2050254048721289459 · Twitter Post