Is CVE-2026-42476 actively exploited?

No active exploitation of CVE-2026-42476 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42476 be exploited remotely?

No. CVE-2026-42476 requires local access to exploit.

What is the CVSS score of CVE-2026-42476?

CVE-2026-42476 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2026-42476

HIGH

CVE-2026-42476

CWE-125Published: May 1, 2026· Updated: May 1, 2026

7.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.8th

Official Description

Two heap-based out-of-bounds read vulnerabilities in the STL ASCII file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 exist in RWStl_Reader::ReadAscii because buffers returned by Standard_ReadLineBuffer::ReadLine() are not properly length-validated before strncasecmp or direct byte access. User-assisted attackers can trigger these issues by persuading a victim to open a crafted STL file with extremely short lines, resulting in a denial of service or possible information disclosure.

NVD Source

Technical Analysis

CVE-2026-42476 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.1.