← Vulnerability feed

Vulnerability record · CVE-2026-42476 · published 1 May 2026

CVE-2026-42476: Opencascade open cascade technology out-of-bounds read vulnerability

Opencascade · Open Cascade Technology

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.

7.1 CVSS 3.1 High EPSS 0.14% · top 97.2% CWE-125 · Out-of-bounds read
7.1CVSS 3.1 base score
0.14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a Third Party Advisory

Track CVE-2026-42476 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2026-42478Opencascade open cascade technology null pointer dereference vulnerabilityAn 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 c…EPSS 0.30%7.1CVE-2026-42477Opencascade open cascade technology out-of-bounds read vulnerabilityA heap-based out-of-bounds read vulnerability in RWObj_Reader::read in the OBJ file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows user-a…EPSS 0.14%5.5CVE-2026-42480Opencascade open cascade technology out-of-bounds read vulnerabilityA 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 att…EPSS 0.14%5.5CVE-2026-42481Opencascade open cascade technology out-of-bounds read vulnerabilityOpen CASCADE Technology (OCCT) V8_0_0_rc5 contains multiple vulnerabilities in its IGES and STEP file parsers that can be triggered by crafted IGES o…EPSS 0.14%5.5CVE-2026-42479Opencascade open cascade technology out-of-bounds read vulnerabilityAn out-of-bounds read vulnerability in VrmlData_IndexedLineSet::TShape in the VRML parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attacke…EPSS 0.13%8.8CVE-2026-11645Google Chrome V8 out-of-bounds read and write enables sandbox code executionGoogle Chrome before 149.0.7827.103 contains an out-of-bounds read and write in the V8 JavaScript engine. A crafted HTML page can trigger the memory …KEVEPSS 2.2%analysed7.8CVE-2023-36424Windows Common Log File System Driver out-of-bounds read privilege escalationCVE-2023-36424 is an out-of-bounds read (CWE-125) in the Windows Common Log File System (CLFS) driver that allows elevation of privilege. It affects …KEVEPSS 12%analysed9.3CVE-2026-3055Citrix NetScaler ADC and Gateway SAML IDP memory overreadNetScaler ADC and NetScaler Gateway, when configured as a SAML identity provider, fail to validate input sufficiently, causing an out-of-bounds memor…KEVEPSS 4.0%analysed

Source: NIST National Vulnerability Database (record CVE-2026-42476), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.