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Vulnerabilities

CVE-2026-42478

High
CWE-476 — Weakness Type
Published: May 1, 2026  ·  Modified: May 8, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

An 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 cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.

🤖 AI Executive Summary

CVE-2026-42478 is a denial of service vulnerability in Open CASCADE Technology's VRML V2.0 parser that allows attackers to crash applications by submitting crafted VRML files with malformed input. The vulnerability stems from improper pointer validation during shape construction in the VrmlData_IndexedFaceSet::TShape function.

📄 Description (Arabic)

تم اكتشاف ثغرة في محلل VRML V2.0 بمكتبة Open CASCADE Technology الإصدار V8_0_0_rc5 تسمح بإنكار الخدمة. الثغرة تنتج عن عدم التحقق من صحة المؤشرات مما يؤدي إلى إلغاء التطبيق عند معالجة ملفات VRML معيبة.

🤖 ملخص تنفيذي (AI)

هذا الثغرة تسمح للمهاجمين بإيقاف تطبيقات تستخدم مكتبة Open CASCADE من خلال ملفات VRML المعيبة. المشكلة تحدث بسبب عدم التحقق الصحيح من المؤشرات أثناء بناء الأشكال الهندسية.

🤖 AI Intelligence Analysis Analyzed: May 6, 2026 00:01
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
energy government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Update Open CASCADE Technology to a patched version beyond V8_0_0_rc5 immediately. Implement input validation for VRML file uploads and restrict VRML file processing to trusted sources. Deploy network-level filtering to block malicious VRML files and monitor for abnormal application crashes.
🔧 خطوات المعالجة (العربية)
قم بتحديث مكتبة Open CASCADE إلى نسخة مصححة فوراً. طبق التحقق من صحة ملفات VRML وقيد معالجة هذه الملفات على المصادر الموثوقة. استخدم تصفية على مستوى الشبكة ومراقبة توقف التطبيقات غير الطبيعي.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.6.1 A.14.2.1
🔵 SAMA CSF
ID.BE-5.1 PR.DS-6.1
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1 A.14.2.5
📦 Affected Products / CPE 7 entries
opencascade:open_cascade_technology
opencascade:open_cascade_technology:8.0.0
opencascade:open_cascade_technology:8.0.0
opencascade:open_cascade_technology:8.0.0
opencascade:open_cascade_technology:8.0.0
opencascade:open_cascade_technology:8.0.0
opencascade:open_cascade_technology:8.0.0
📊 CVSS Score
7.5
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-476
EPSS0.03%
Exploit No
Patch ✗ No
Published 2026-05-01
Source Feed nvd
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-476
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