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Vulnerabilities

CVE-2026-10206

High
CWE-119 — Weakness Type
Published: Jun 1, 2026  ·  Modified: Jun 8, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A vulnerability was detected in D-Link DI-8400 up to 16.07.26A1. This affects an unknown function of the file /dbsrv.asp. Performing a manipulation of the argument str results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. The initial researcher advisory mentions contradicting parameter names to be affected.

🤖 AI Executive Summary

A stack-based buffer overflow vulnerability exists in D-Link DI-8400 routers (up to firmware 16.07.26A1) affecting the /dbsrv.asp endpoint. With a CVSS score of 8.8, this critical flaw allows remote attackers to execute arbitrary code without authentication. No patch is currently available, making immediate mitigation essential for affected organizations.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Jun 5, 2026 12:49
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations using D-Link DI-8400 routers face critical risk, particularly in banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare facilities, and energy sector networks. Telecom providers (STC, Mobily) and ISPs utilizing these devices as edge routers are at high risk. The vulnerability enables complete network compromise, lateral movement, and data exfiltration without authentication, directly threatening critical infrastructure and sensitive financial/government data.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Facilities Energy and Utilities Telecommunications Internet Service Providers Critical Infrastructure
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all D-Link DI-8400 devices in your network using asset discovery tools
2. Isolate affected devices from critical networks if possible, or implement network segmentation
3. Disable remote management access to /dbsrv.asp via firewall rules
4. Monitor for exploitation attempts targeting /dbsrv.asp with suspicious 'str' parameter values

COMPENSATING CONTROLS (until patch available):
5. Implement WAF rules to block requests to /dbsrv.asp with oversized or malformed 'str' parameters
6. Restrict access to management interfaces to trusted IP ranges only
7. Enable detailed logging of all HTTP requests to the device
8. Deploy IDS/IPS signatures detecting buffer overflow patterns in HTTP requests

DETECTION RULES:
- Monitor for HTTP POST/GET requests to /dbsrv.asp with 'str' parameter exceeding 256 bytes
- Alert on any non-standard characters or encoded payloads in 'str' parameter
- Track failed authentication attempts followed by /dbsrv.asp access

LONG-TERM:
9. Plan replacement of D-Link DI-8400 with patched alternatives or alternative vendors
10. Contact D-Link support for firmware updates or end-of-life guidance
11. Implement network access control (NAC) to prevent unauthorized device connections
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة D-Link DI-8400 في شبكتك باستخدام أدوات اكتشاف الأصول
2. عزل الأجهزة المتأثرة عن الشبكات الحرجة إن أمكن، أو تطبيق تقسيم الشبكة
3. تعطيل الوصول البعيد إلى /dbsrv.asp عبر قواعد جدار الحماية
4. مراقبة محاولات الاستغلال التي تستهدف /dbsrv.asp بقيم معاملات 'str' مريبة

الضوابط البديلة (حتى توفر التصحيح):
5. تطبيق قواعد WAF لحجب الطلبات إلى /dbsrv.asp بمعاملات 'str' كبيرة الحجم أو مشوهة
6. تقييد الوصول إلى واجهات الإدارة بنطاقات IP موثوقة فقط
7. تفعيل التسجيل التفصيلي لجميع طلبات HTTP للجهاز
8. نشر توقيعات IDS/IPS للكشف عن أنماط تجاوز المخزن المؤقت في طلبات HTTP

قواعد الكشف:
- مراقبة طلبات HTTP POST/GET إلى /dbsrv.asp بمعامل 'str' يتجاوز 256 بايت
- تنبيه على أي أحرف غير قياسية أو حمولات مشفرة في معامل 'str'
- تتبع محاولات المصادقة الفاشلة متبوعة بالوصول إلى /dbsrv.asp

المدى الطويل:
9. التخطيط لاستبدال D-Link DI-8400 بدائل معدلة أو بائعين بدائل
10. الاتصال بدعم D-Link للحصول على تحديثات البرامج الثابتة أو إرشادات نهاية الحياة
11. تطبيق التحكم في الوصول إلى الشبكة (NAC) لمنع اتصالات الأجهزة غير المصرح بها
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities ECC 2024 A.14.2.1 - Secure development policy ECC 2024 A.12.2.1 - Monitoring and logging of network access
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification PR.IP-12 - Security patch management DE.CM-1 - Detection and monitoring of network anomalies
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development and change management A.12.4.1 - Event logging and monitoring
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates Requirement 11.2 - Vulnerability scanning Requirement 12.2 - Configuration standards
📊 CVSS Score
8.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score8.8
CWECWE-119
EPSS0.08%
Exploit No
Patch ✗ No
Published 2026-06-01
Source Feed nvd
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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