A 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 attackers to cause a denial of service via a crafted VRML file. The issue occurs because the quoted-string escape handler uses ptr[++anOffset] without proper bounds checking, which can read past the end of a fixed-size stack buffer.
History

Mon, 04 May 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Opencascade
Opencascade open Cascade Technology
Vendors & Products Opencascade
Opencascade open Cascade Technology

Sat, 02 May 2026 08:15:00 +0000

Type Values Removed Values Added
Title Stack-based Out-of-Bounds Read in VRML Parser Causing Denial of Service in OCCT

Fri, 01 May 2026 19:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 01 May 2026 15:30:00 +0000

Type Values Removed Values Added
Description A 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 attackers to cause a denial of service via a crafted VRML file. The issue occurs because the quoted-string escape handler uses ptr[++anOffset] without proper bounds checking, which can read past the end of a fixed-size stack buffer.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-05-01T00:00:00.000Z

Updated: 2026-05-01T18:29:14.320Z

Reserved: 2026-04-27T00:00:00.000Z

Link: CVE-2026-42480

cve-icon Vulnrichment

Updated: 2026-05-01T18:29:05.334Z

cve-icon NVD

Status : Received

Published: 2026-05-01T16:16:32.047

Modified: 2026-05-01T19:16:32.470

Link: CVE-2026-42480

cve-icon Redhat

No data.