A 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-assisted attackers to cause a denial of service or obtain sensitive information by persuading a victim to open a crafted OBJ file. The issue occurs because Standard_ReadLineBuffer::ReadLine() can return a 1-byte buffer for a minimal OBJ line, and RWObj_Reader::read() calls pushIndices(aLine + 2) without validating the buffer length.
History

Sat, 02 May 2026 08:30:00 +0000

Type Values Removed Values Added
Title Heap‑Based Out‑of‑Bounds Read in OCCT OBJ Parser Leading to DoS or Information Leak

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

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H'}

ssvc

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

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'}


Fri, 01 May 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Opencascade
Opencascade open Cascade Technology
Weaknesses CWE-125
CPEs cpe:2.3:a:opencascade:open_cascade_technology:*:*:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc5:*:*:*:*:*:*
Vendors & Products Opencascade
Opencascade open Cascade Technology
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H'}


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

Type Values Removed Values Added
Description A 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-assisted attackers to cause a denial of service or obtain sensitive information by persuading a victim to open a crafted OBJ file. The issue occurs because Standard_ReadLineBuffer::ReadLine() can return a 1-byte buffer for a minimal OBJ line, and RWObj_Reader::read() calls pushIndices(aLine + 2) without validating the buffer length.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

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

Updated: 2026-05-01T18:32:07.533Z

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

Link: CVE-2026-42477

cve-icon Vulnrichment

Updated: 2026-05-01T18:32:03.540Z

cve-icon NVD

Status : Modified

Published: 2026-05-01T15:16:43.737

Modified: 2026-05-01T19:16:31.937

Link: CVE-2026-42477

cve-icon Redhat

No data.