📄 Description (English)
Incorrect boundary conditions, integer overflow in the Graphics component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
🤖 AI Executive Summary
An integer overflow vulnerability in Firefox and Thunderbird's Graphics component (CVE-2026-4694) affects multiple versions with a CVSS score of 7.5. This boundary condition flaw could allow attackers to cause memory corruption or potentially execute arbitrary code through specially crafted graphics content. Immediate patching is critical for organizations relying on these applications for secure communications and web browsing.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 1, 2026 09:36
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi government entities (NCA, NCSC), banking sector (SAMA-regulated institutions, major banks), telecommunications companies (STC, Mobily), and healthcare organizations using Firefox/Thunderbird for secure communications. Government employees and financial institutions relying on these applications for email and web access face elevated risk of compromise. The Graphics component vulnerability could be exploited through malicious websites or email attachments, making it particularly dangerous in enterprise environments.
🏢 Affected Saudi Sectors
Government (NCA, NCSC, Ministry of Interior)
Banking and Financial Services (SAMA-regulated banks)
Telecommunications (STC, Mobily, Zain)
Healthcare (Ministry of Health, private hospitals)
Energy (Saudi Aramco, SEC)
Education (Universities, research institutions)
Defense and Security
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Firefox and Thunderbird installations across the organization
2. Identify affected versions: Firefox <149, Firefox ESR <115.34 and <140.9, Thunderbird <149 and <140.9
3. Disable Graphics acceleration in Firefox/Thunderbird settings as temporary mitigation (about:config, gfx.webrender.enabled = false)
4. Restrict access to untrusted websites and email attachments containing graphics content
PATCHING GUIDANCE:
1. Upgrade Firefox to version 149 or later
2. Upgrade Firefox ESR to version 115.34 or 140.9 or later
3. Upgrade Thunderbird to version 149 or later
4. Upgrade Thunderbird ESR to version 140.9 or later
5. Deploy patches through centralized patch management systems
COMPENSATING CONTROLS:
1. Implement network-level filtering to block malicious graphics content
2. Deploy email gateway scanning with graphics content analysis
3. Use application whitelisting to restrict Firefox/Thunderbird execution
4. Monitor for suspicious process behavior and memory access patterns
5. Implement Content Security Policy (CSP) headers on internal web applications
DETECTION RULES:
1. Monitor for Firefox/Thunderbird crashes with graphics-related stack traces
2. Alert on unusual memory allocation patterns in graphics processes
3. Track failed graphics rendering operations
4. Monitor for exploitation attempts targeting graphics libraries (libwebrender, skia)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع تثبيتات Firefox و Thunderbird عبر المنظمة
2. تحديد الإصدارات المتأثرة: Firefox <149، Firefox ESR <115.34 و <140.9، Thunderbird <149 و <140.9
3. تعطيل تسريع الرسومات في إعدادات Firefox/Thunderbird كتخفيف مؤقت
4. تقييد الوصول إلى المواقع غير الموثوقة والمرفقات البريدية التي تحتوي على محتوى رسومات
إرشادات التصحيح:
1. ترقية Firefox إلى الإصدار 149 أو أحدث
2. ترقية Firefox ESR إلى الإصدار 115.34 أو 140.9 أو أحدث
3. ترقية Thunderbird إلى الإصدار 149 أو أحدث
4. ترقية Thunderbird ESR إلى الإصدار 140.9 أو أحدث
5. نشر التصحيحات من خلال أنظمة إدارة التصحيحات المركزية
الضوابط البديلة:
1. تنفيذ تصفية على مستوى الشبكة لحجب محتوى الرسومات الضار
2. نشر فحص بوابة البريد الإلكتروني مع تحليل محتوى الرسومات
3. استخدام القائمة البيضاء للتطبيقات لتقييد تنفيذ Firefox/Thunderbird
4. مراقبة السلوك المريب وأنماط الوصول إلى الذاكرة
5. تنفيذ رؤوس سياسة أمان المحتوى على تطبيقات الويب الداخلية
قواعد الكشف:
1. مراقبة أعطال Firefox/Thunderbird مع تتبع مكدس متعلق بالرسومات
2. تنبيه على أنماط تخصيص الذاكرة غير العادية في عمليات الرسومات
3. تتبع عمليات عرض الرسومات الفاشلة
4. مراقبة محاولات الاستغلال التي تستهدف مكتبات الرسومات
📋 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 authentication
ECC 2024 A.6.2.1 - Vulnerability management and patching
ECC 2024 A.12.2.1 - Change management procedures
🔵 SAMA CSF
SAMA CSF ID.BE-1 - Business Environment
SAMA CSF PR.IP-12 - Software, firmware, and information integrity
SAMA CSF DE.CM-8 - Vulnerability scans
SAMA CSF RS.MI-2 - Incident response and recovery
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for information security
ISO 27001:2022 A.8.1 - Asset management
ISO 27001:2022 A.12.6 - Change management
ISO 27001:2022 A.14.2 - Software development security
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning
🔗 References & Sources 6
🔗
https://bugzilla.mozilla.org/show_bug.cgi?id=2018430
security@mozilla.org
Permissions Required
🔗
https://www.mozilla.org/security/advisories/mfsa2026-20/
security@mozilla.org
Vendor Advisory
🔗
https://www.mozilla.org/security/advisories/mfsa2026-21/
security@mozilla.org
Vendor Advisory
🔗
https://www.mozilla.org/security/advisories/mfsa2026-22/
security@mozilla.org
Vendor Advisory
🔗
https://www.mozilla.org/security/advisories/mfsa2026-23/
security@mozilla.org
Vendor Advisory
🔗
https://www.mozilla.org/security/advisories/mfsa2026-24/
security@mozilla.org
Vendor Advisory
📦 Affected Products / CPE 5 entries
mozilla:firefox
mozilla:firefox
mozilla:firefox
mozilla:thunderbird
mozilla:thunderbird