What is CVE-2026-42479?

CVE-2026-42479 is a medium-severity vulnerability in Opencascade Open_cascade_technology, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-05-01.

How severe is CVE-2026-42479?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Out-of-bounds Read in Opencascade Open_cascade_technology

CVE-2026-42479

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 coordInd…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (3.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Opencascade Open_cascade_technology — versions 8.0.0
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2026-42479?: CVE-2026-42479 is a medium-severity vulnerability in Opencascade Open_cascade_technology, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-05-01.
How severe is CVE-2026-42479?: Medium severity. CVSS v3 base score is 5.5 out of 10.