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Vulnerabilities

CVE-2026-4712

High
Information disclosure in the Widget: Cocoa component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
CWE-200 — Weakness Type
Published: Mar 24, 2026  ·  Modified: Mar 30, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

Information disclosure in the Widget: Cocoa component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.

🤖 AI Executive Summary

CVE-2026-4712 is a high-severity information disclosure vulnerability in Mozilla Firefox and Thunderbird's Cocoa widget component affecting versions before 149 and ESR 140.9. The vulnerability could allow attackers to access sensitive information through the widget rendering layer. While no public exploit is currently available, the high CVSS score of 7.5 and information disclosure nature pose significant risk to Saudi organizations relying on these applications for secure communications.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 30, 2026 20:18
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi government entities, financial institutions, and healthcare organizations that rely on Firefox and Thunderbird for secure email communications and web browsing. Government agencies under NCA oversight, SAMA-regulated financial institutions, and healthcare providers using these applications for confidential communications are at elevated risk. The information disclosure nature could expose sensitive government correspondence, financial data, and patient information. Telecommunications sector (STC, Mobily) and energy sector organizations using these browsers for administrative functions may also be affected.
🏢 Affected Saudi Sectors
Government Banking and Financial Services Healthcare Telecommunications Energy and Utilities Education 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, particularly on systems handling sensitive data
2. Disable Cocoa widget rendering where possible or restrict to non-sensitive operations
3. Implement network segmentation to limit exposure of systems running affected versions
4. Monitor for suspicious information access patterns in application logs

Patching Guidance:
1. Upgrade Firefox to version 149 or later immediately
2. Upgrade Firefox ESR to version 140.9 or later
3. Upgrade Thunderbird to version 149 or later
4. Upgrade Thunderbird ESR to version 140.9 or later
5. Prioritize patching on systems handling classified or sensitive government/financial data

Compensating Controls (if immediate patching not possible):
1. Restrict Firefox/Thunderbird usage to non-sensitive operations only
2. Implement application whitelisting to prevent unauthorized widget access
3. Deploy endpoint detection and response (EDR) solutions to monitor for information exfiltration
4. Use VPN/secure tunnels for all Firefox/Thunderbird communications
5. Implement data loss prevention (DLP) tools to detect unauthorized information disclosure

Detection Rules:
1. Monitor for unusual memory access patterns in Firefox/Thunderbird processes
2. Alert on unexpected clipboard access from widget components
3. Track file system access from Cocoa rendering processes
4. Monitor network connections initiated from Firefox/Thunderbird to unexpected destinations
5. Log all widget component initialization and rendering events
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع تثبيتات Firefox و Thunderbird عبر المنظمة، خاصة على الأنظمة التي تتعامل مع البيانات الحساسة
2. قم بتعطيل عرض أداة Cocoa حيث أمكن أو قصره على العمليات غير الحساسة
3. تنفيذ تقسيم الشبكة لتحديد تعرض الأنظمة التي تعمل بإصدارات متأثرة
4. مراقبة أنماط الوصول إلى المعلومات المريبة في سجلات التطبيق

إرشادات التصحيح:
1. ترقية Firefox إلى الإصدار 149 أو أحدث فوراً
2. ترقية Firefox ESR إلى الإصدار 140.9 أو أحدث
3. ترقية Thunderbird إلى الإصدار 149 أو أحدث
4. ترقية Thunderbird ESR إلى الإصدار 140.9 أو أحدث
5. إعطاء الأولوية لتصحيح الأنظمة التي تتعامل مع البيانات الحكومية أو المالية السرية

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. قصر استخدام Firefox/Thunderbird على العمليات غير الحساسة فقط
2. تنفيذ قائمة بيضاء للتطبيقات لمنع الوصول غير المصرح به للأداة
3. نشر حلول الكشف والاستجابة على نقطة النهاية (EDR) لمراقبة إفشاء المعلومات
4. استخدام VPN/الأنفاق الآمنة لجميع اتصالات Firefox/Thunderbird
5. تنفيذ أدوات منع فقدان البيانات (DLP) للكشف عن إفشاء المعلومات غير المصرح به

قواعد الكشف:
1. مراقبة أنماط الوصول إلى الذاكرة غير العادية في عمليات Firefox/Thunderbird
2. تنبيه الوصول غير المتوقع للحافظة من مكونات الأداة
3. تتبع الوصول إلى نظام الملفات من عمليات عرض Cocoa
4. مراقبة الاتصالات الشبكية التي تم بدؤها من Firefox/Thunderbird إلى وجهات غير متوقعة
5. تسجيل جميع أحداث تهيئة ومعالجة مكونات الأداة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information security policies and procedures ECC 2024 A.6.1.1 - Access control and authentication ECC 2024 A.8.2.1 - Classification of information assets ECC 2024 A.12.2.1 - Change management procedures ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software and hardware inventory SAMA CSF PR.AC-1 - Access control policy SAMA CSF PR.PT-2 - Removable media protection SAMA CSF DE.CM-1 - Network monitoring SAMA CSF RS.MI-2 - Incident response procedures
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for information security ISO 27001:2022 A.6.1 - Organization of information security ISO 27001:2022 A.8.1 - Asset management ISO 27001:2022 A.12.6 - Management of technical vulnerabilities ISO 27001:2022 A.14.2 - Information security requirements in supplier relationships
🟣 PCI DSS v4.0.1
PCI DSS 2.4 - Maintain inventory of system components PCI DSS 6.2 - Ensure security patches are installed PCI DSS 11.2 - Run automated vulnerability scans
📦 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:H/I:N/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityN — None / Network
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-200
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-200
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