📄 Description (English)
A weakness has been identified in D-Link DIR-823X 250416. This impacts an unknown function of the file /goform/set_language. Executing a manipulation of the argument langSelection can lead to os command injection. It is possible to launch the attack remotely. The exploit has been made available to the public and could be used for attacks.
🤖 AI Executive Summary
D-Link DIR-823X routers (firmware 250416) contain a critical OS command injection vulnerability in the /goform/set_language endpoint that allows unauthenticated remote code execution through the langSelection parameter. With public exploit availability and widespread router deployment across Saudi organizations, this poses immediate risk to network infrastructure. A patch is available and should be deployed urgently.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 9, 2026 03:33
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi telecommunications sector (STC, Mobily, Zain) and government agencies using D-Link routers for network infrastructure. Banking sector (SAMA-regulated institutions) at risk if routers used in branch networks or data centers. Healthcare facilities and energy sector (ARAMCO) potentially affected if DIR-823X deployed in operational networks. Small-to-medium enterprises across all sectors heavily rely on this router model, creating widespread exposure. Attackers could establish persistent backdoors, intercept communications, or pivot to internal networks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services
Government and Public Administration
Healthcare
Energy and Utilities (ARAMCO)
Small and Medium Enterprises
Education
Retail and E-commerce
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.7
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all D-Link DIR-823X devices running firmware 250416 in your network using network scanning tools
2. Isolate affected routers from critical network segments if patching cannot be completed within 24 hours
3. Disable remote management features and restrict access to /goform/set_language endpoint via firewall rules
4. Monitor router logs for suspicious language parameter values or command injection attempts
PATCHING:
5. Download latest firmware from D-Link support portal and verify digital signatures
6. Schedule maintenance window and apply firmware update to all affected devices
7. Verify successful update by checking firmware version post-reboot
COMPENSATING CONTROLS (if immediate patching not possible):
8. Implement WAF rules blocking requests containing shell metacharacters (;|&$`\n) in langSelection parameter
9. Restrict router management access to specific IP ranges via ACLs
10. Enable router authentication and change default credentials
DETECTION:
11. Deploy IDS/IPS signatures detecting POST requests to /goform/set_language with command injection payloads
12. Monitor for unusual process execution originating from router IP addresses
13. Alert on firmware version mismatches or unexpected router reboots
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة D-Link DIR-823X التي تعمل بالإصدار 250416 في شبكتك باستخدام أدوات المسح
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة إذا لم يتمكن من تطبيق التصحيح خلال 24 ساعة
3. تعطيل ميزات الإدارة البعيدة وتقييد الوصول إلى نقطة النهاية /goform/set_language عبر قواعد جدار الحماية
4. مراقبة سجلات الجهاز للقيم المريبة لمعامل اللغة أو محاولات حقن الأوامر
تطبيق التصحيحات:
5. تحميل أحدث إصدار من البرنامج الثابت من بوابة دعم D-Link والتحقق من التوقيعات الرقمية
6. جدولة نافذة صيانة وتطبيق تحديث البرنامج الثابت على جميع الأجهزة المتأثرة
7. التحقق من نجاح التحديث بفحص إصدار البرنامج الثابت بعد إعادة التشغيل
الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
8. تطبيق قواعد WAF تحجب الطلبات التي تحتوي على أحرف shell (;|&$`\n) في معامل langSelection
9. تقييد وصول إدارة الجهاز على نطاقات IP محددة عبر ACLs
10. تفعيل مصادقة الجهاز وتغيير بيانات الاعتماد الافتراضية
الكشف:
11. نشر توقيعات IDS/IPS للكشف عن طلبات POST إلى /goform/set_language مع حمولات حقن الأوامر
12. مراقبة تنفيذ العمليات غير العادية من عناوين IP الجهاز
13. تنبيهات عند عدم تطابق إصدار البرنامج الثابت أو إعادة تشغيل الجهاز غير المتوقعة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Network security and access control
ECC 2024 A.5.2.1 - Secure configuration management
ECC 2024 A.5.2.3 - Patch and vulnerability management
ECC 2024 A.6.2.1 - Monitoring and logging of network devices
🔵 SAMA CSF
SAMA CSF ID.BE-3.1 - Asset management and inventory
SAMA CSF PR.DS-6.1 - Secure configuration of systems
SAMA CSF PR.MA-2.1 - Maintenance and patch management
SAMA CSF DE.CM-1.1 - Detection and monitoring of anomalies
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1.1 - Policies for information security
ISO 27001:2022 A.8.1.1 - Asset inventory and responsibility
ISO 27001:2022 A.8.2.1 - Configuration management
ISO 27001:2022 A.8.2.4 - Removal of access rights
ISO 27001:2022 A.8.3.1 - Cryptography and patch management
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 6.4.6 - Public-facing web applications security
PCI DSS 11.2 - Vulnerability scanning and assessment
🔗 References & Sources 6
🔗
https://github.com/master-abc/cve/issues/24
cna@vuldb.com
Exploit
Issue Tracking
🔗
https://vuldb.com/?ctiid.344651
cna@vuldb.com
Permissions Required
VDB Entry
🔗
https://vuldb.com/?id.344651
cna@vuldb.com
Third Party Advisory
VDB Entry
🔗
https://vuldb.com/?submit.746379
cna@vuldb.com
Third Party Advisory
VDB Entry
🔗
https://vuldb.com/?submit.746380
cna@vuldb.com
Third Party Advisory
VDB Entry
🔗
https://www.dlink.com/
cna@vuldb.com
Product
📦 Affected Products / CPE 1 entries
dlink:dir-823x_firmware:250416