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Vulnerabilities

CVE-2026-42477

High
CWE-125 — Weakness Type
Published: May 1, 2026  ·  Modified: May 8, 2026  ·  Source: NVD
CVSS v3
7.1
🔗 NVD Official
📄 Description (English)

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.

🤖 AI Executive Summary

A heap-based out-of-bounds read vulnerability in Open CASCADE Technology's OBJ file parser allows attackers to cause denial of service or leak sensitive information through crafted OBJ files. The vulnerability stems from insufficient buffer length validation when processing minimal OBJ lines, enabling unauthorized memory access.

📄 Description (Arabic)

تحتوي ثغرة CVE-2026-42477 على خلل في معالجة ملفات OBJ حيث يمكن لـ Standard_ReadLineBuffer::ReadLine() إرجاع مخزن مؤقت بحجم بايت واحد فقط. عندما يستدعي RWObj_Reader::read() دالة pushIndices(aLine + 2) دون التحقق من طول المخزن المؤقت، يحدث وصول غير مصرح به للذاكرة. يمكن للمهاجمين استغلال هذا بفتح ملف OBJ مصنوع بعناية لتحقيق رفض الخدمة أو تسريب البيانات الحساسة.

🤖 ملخص تنفيذي (AI)

ثغرة قراءة خارج الحدود في ذاكرة الكومة في محلل ملفات OBJ في Open CASCADE Technology تسمح للمهاجمين بإحداث رفض الخدمة أو تسريب المعلومات الحساسة. تنشأ الثغرة من عدم التحقق الكافي من طول المخزن المؤقت عند معالجة خطوط OBJ الصغيرة.

🤖 AI Intelligence Analysis Analyzed: May 9, 2026 07:13
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
energy government manufacturing
🎯 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 that includes proper buffer length validation in RWObj_Reader::read() and Standard_ReadLineBuffer::ReadLine(). Implement input validation for OBJ files and restrict file parsing to trusted sources. Deploy network-based file filtering to block suspicious OBJ files.
🔧 خطوات المعالجة (العربية)
قم بتحديث Open CASCADE Technology إلى نسخة مصححة تتضمن التحقق الصحيح من طول المخزن المؤقت. طبق التحقق من صحة المدخلات لملفات OBJ وقيد معالجة الملفات على المصادر الموثوقة. استخدم تصفية الملفات على مستوى الشبكة لحجب ملفات OBJ المريبة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
2.1.1 2.2.1
🔵 SAMA CSF
ID.RA-1 PR.DS-1
🟡 ISO 27001:2022
A.12.2.1 A.14.2.1
📦 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
7.1
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeU — Unchanged
ConfidentialityH — High
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.1
CWECWE-125
EPSS0.01%
Exploit No
Patch ✗ No
Published 2026-05-01
Source Feed nvd
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-125
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