Is CVE-2026-42478 actively exploited?

No active exploitation of CVE-2026-42478 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42478 be exploited remotely?

Yes. CVE-2026-42478 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42478?

CVE-2026-42478 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-42478

HIGH

CVE-2026-42478

CWE-476Published: May 1, 2026· Updated: May 1, 2026

7.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42478 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.