PT-2026-36478 · Unknown · Open Cascade Technology

Feng Ning · Published 2026-05-01 · Updated 2026-05-01 · CVE-2026-42479

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/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 An out-of-bounds read in the VRML parser occurs within the VrmlData IndexedLineSet::TShape function. This issue allows attackers to cause a denial of service by using a crafted VRML file. The flaw exists because coordIndex values from the parsed input are used as direct array indices without being validated against the size of the coordinate array during geometry processing.

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

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-42479

Affected Products

Open Cascade Technology

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-42479 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-42479 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-42479 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-42479 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-42479 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-42479 · Vendor Advisory
• https://twitter.com/infoflowcloud/status/2050255688249565504 · Twitter Post
• https://twitter.com/CVEnew/status/2050254049623040165 · Twitter Post
• https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a · Note