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Vulnerabilities

CVE-2026-4714

High
Incorrect boundary conditions in the Audio/Video component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
CWE-754 — Weakness Type
Published: Mar 24, 2026  ·  Modified: Mar 30, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

Incorrect boundary conditions in the Audio/Video component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.

🤖 AI Executive Summary

CVE-2026-4714 is a high-severity vulnerability (CVSS 7.5) affecting Mozilla Firefox and Thunderbird due to incorrect boundary conditions in the Audio/Video component. This CWE-754 flaw could enable attackers to cause denial of service or potentially execute arbitrary code through specially crafted media files. No patch is currently available, requiring immediate compensating controls in Saudi organizations.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 30, 2026 17:14
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi government entities (NCA, NCSC), financial institutions (SAMA-regulated banks), and telecommunications providers (STC, Mobily) where Firefox and Thunderbird are widely deployed for secure communications and email. Healthcare organizations using these applications for telemedicine and patient communications are also at elevated risk. The lack of available patches creates immediate operational risk for critical infrastructure sectors relying on these applications.
🏢 Affected Saudi Sectors
Government (NCA, NCSC, Ministry of Interior) Banking and Financial Services (SAMA-regulated institutions) Telecommunications (STC, Mobily, Zain) Healthcare (MOH, private hospitals) Energy (ARAMCO, SEC) Education (Universities, research institutions) Defense and Security
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Firefox and Thunderbird installations across the organization, prioritizing critical systems
2. Disable or restrict access to Audio/Video features in Firefox/Thunderbird until patches are available
3. Implement application whitelisting to prevent execution of untrusted media files
4. Block or sandbox email attachments containing audio/video content

COMPENSATING CONTROLS:
5. Deploy network-level content filtering to block suspicious media file types at email gateways
6. Implement strict email attachment policies restricting .mp4, .avi, .mov, .webm, .ogg, .mp3 extensions
7. Use endpoint detection and response (EDR) solutions to monitor for exploitation attempts
8. Enforce browser sandboxing and disable plugins where possible
9. Restrict Firefox/Thunderbird usage to non-critical systems until patches release

DETECTION:
10. Monitor for crashes or unexpected terminations of Firefox/Thunderbird processes
11. Alert on attempts to open media files from untrusted sources
12. Track browser error logs for audio/video codec-related exceptions
13. Implement YARA rules to detect malformed media file headers
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع تثبيتات Firefox و Thunderbird عبر المنظمة، مع إعطاء الأولوية للأنظمة الحرجة
2. تعطيل أو تقييد الوصول إلى ميزات الصوت/الفيديو في Firefox/Thunderbird حتى توفر التصحيحات
3. تطبيق قائمة بيضاء للتطبيقات لمنع تنفيذ ملفات الوسائط غير الموثوقة
4. حظر أو عزل مرفقات البريد الإلكتروني التي تحتوي على محتوى صوتي/فيديو

الضوابط التعويضية:
5. نشر تصفية المحتوى على مستوى الشبكة لحظر أنواع ملفات الوسائط المريبة على بوابات البريد
6. تطبيق سياسات صارمة لمرفقات البريد تقيد امتدادات .mp4 و .avi و .mov و .webm و .ogg و .mp3
7. استخدام حلول الكشف والاستجابة على نقطة النهاية (EDR) لمراقبة محاولات الاستغلال
8. فرض عزل المتصفح وتعطيل المكونات الإضافية حيث أمكن
9. تقييد استخدام Firefox/Thunderbird على الأنظمة غير الحرجة حتى إصدار التصحيحات

الكشف:
10. مراقبة أعطال أو إنهاء غير متوقع لعمليات Firefox/Thunderbird
11. تنبيهات عند محاولات فتح ملفات وسائط من مصادر غير موثوقة
12. تتبع سجلات أخطاء المتصفح للاستثناءات المتعلقة بترميز الصوت/الفيديو
13. تطبيق قواعد YARA للكشف عن رؤوس ملفات الوسائط المشوهة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information Security Policies and Procedures ECC 2024 A.5.2.1 - Access Control and User Management ECC 2024 A.6.1.1 - Cryptography and Secure Communications ECC 2024 A.8.1.1 - Incident Management and Response
🔵 SAMA CSF
SAMA CSF ID.BE-1 - Business Environment SAMA CSF PR.IP-1 - Information Protection Processes SAMA CSF PR.IP-12 - Software, Firmware, and Information Integrity SAMA CSF DE.CM-1 - Detection Processes
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for Information Security ISO 27001:2022 A.8.1 - User Endpoint Devices ISO 27001:2022 A.8.2 - Privileged Access Rights ISO 27001:2022 A.12.6 - Change Management
🟣 PCI DSS v4.0.1
PCI DSS 2.4 - Configuration Standards PCI DSS 6.2 - Security Patches and Updates PCI DSS 11.2 - Vulnerability Scanning
📦 Affected Products / CPE 2 entries
mozilla:firefox
mozilla:firefox
📊 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-754
Exploit No
Patch ✗ No
Published 2026-03-24
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-754
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