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Vulnerabilities

CVE-2026-2907

High ⚡ Exploit Available
A weakness has been identified in Tenda HG9 300001138. Affected by this vulnerability is an unknown functionality of the file /boaform/formgponConf of the component GPON Configuration Endpoint. This m
CWE-119 — Weakness Type
Published: Feb 22, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A weakness has been identified in Tenda HG9 300001138. Affected by this vulnerability is an unknown functionality of the file /boaform/formgponConf of the component GPON Configuration Endpoint. This manipulation of the argument fmgpon_loid/fmgpon_loid_password causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.

🤖 AI Executive Summary

A critical stack-based buffer overflow vulnerability exists in Tenda HG9 router firmware (version 300001138) affecting the GPON configuration endpoint. The vulnerability allows remote attackers to execute arbitrary code by manipulating the fmgpon_loid or fmgpon_loid_password parameters. With a CVSS score of 8.8 and publicly available exploits, this poses an immediate threat to network infrastructure across Saudi Arabia.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 01:02
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability directly impacts Saudi telecommunications infrastructure, particularly affecting STC (Saudi Telecom Company) and other ISPs utilizing Tenda HG9 routers for GPON (Gigabit Passive Optical Network) deployments. Government agencies relying on these routers for network connectivity face critical risk. Banking and financial institutions using these devices for branch connectivity are vulnerable to data exfiltration and network compromise. Healthcare facilities and energy sector organizations (including ARAMCO) that depend on these routers for critical communications are at significant risk. The vulnerability enables complete device compromise, allowing attackers to intercept traffic, establish persistent backdoors, and pivot into internal networks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Banking and Financial Services (SAMA regulated) Government and Public Administration (NCA oversight) Healthcare (MOH facilities) Energy and Oil & Gas (ARAMCO, utilities) Education (Universities and research institutions) Critical Infrastructure
⚖️ Saudi Risk Score (AI)
9.1
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda HG9 devices in your network using network scanning tools (nmap, Shodan queries for Saudi IP ranges)
2. Isolate affected devices from critical network segments if patching cannot be completed immediately
3. Implement network segmentation to restrict access to GPON configuration endpoints
4. Monitor for suspicious access attempts to /boaform/formgponConf endpoint

PATCHING GUIDANCE:
1. Contact Tenda support or check their official website for firmware version >300001138
2. Download the latest firmware from official Tenda channels only
3. Perform firmware updates during maintenance windows with proper backups
4. Verify firmware integrity using provided checksums before deployment
5. Test updates in lab environment before production deployment

COMPENSATING CONTROLS (if patch unavailable):
1. Restrict access to /boaform/formgponConf to authorized IP addresses only via firewall rules
2. Disable remote management interfaces if not required
3. Change default credentials immediately (if applicable)
4. Implement Web Application Firewall (WAF) rules to block suspicious parameter values in fmgpon_loid/fmgpon_loid_password fields
5. Deploy IDS/IPS signatures to detect buffer overflow attempts

DETECTION RULES:
1. Monitor for HTTP POST requests to /boaform/formgponConf with unusually long parameter values (>256 bytes)
2. Alert on any access to GPON configuration endpoints from unexpected source IPs
3. Track firmware version changes on all Tenda devices
4. Monitor for process execution anomalies following GPON configuration changes
5. Implement YARA rules for known exploit payloads if available from threat intelligence feeds
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda HG9 في شبكتك باستخدام أدوات المسح (nmap، استعلامات Shodan للنطاقات السعودية)
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة إذا لم يكن يمكن إكمال التصحيح فوراً
3. تنفيذ تقسيم الشبكة لتقييد الوصول إلى نقاط نهاية تكوين GPON
4. مراقبة محاولات الوصول المريبة إلى نقطة النهاية /boaform/formgponConf

إرشادات التصحيح:
1. الاتصال بدعم Tenda أو التحقق من موقعهم الرسمي للحصول على إصدار برنامج تشغيل >300001138
2. تحميل أحدث برنامج تشغيل من قنوات Tenda الرسمية فقط
3. إجراء تحديثات البرنامج أثناء نوافذ الصيانة مع النسخ الاحتياطية المناسبة
4. التحقق من سلامة البرنامج باستخدام المجاميع المرجعية المتوفرة قبل النشر
5. اختبار التحديثات في بيئة المختبر قبل نشرها في الإنتاج

الضوابط البديلة (إذا لم يكن التصحيح متاحاً):
1. تقييد الوصول إلى /boaform/formgponConf إلى عناوين IP المصرح بها فقط عبر قواعد جدار الحماية
2. تعطيل واجهات الإدارة البعيدة إذا لم تكن مطلوبة
3. تغيير بيانات الاعتماد الافتراضية فوراً (إن أمكن)
4. تنفيذ قواعد جدار تطبيقات الويب (WAF) لحجب قيم المعاملات المريبة في حقول fmgpon_loid/fmgpon_loid_password
5. نشر توقيعات IDS/IPS للكشف عن محاولات تجاوز المخزن المؤقت

قواعد الكشف:
1. مراقبة طلبات HTTP POST إلى /boaform/formgponConf بقيم معاملات طويلة بشكل غير عادي (>256 بايت)
2. التنبيه على أي وصول إلى نقاط نهاية تكوين GPON من عناوين IP غير متوقعة
3. تتبع تغييرات إصدار البرنامج على جميع أجهزة Tenda
4. مراقبة حالات تنفيذ العمليات الشاذة بعد تغييرات تكوين GPON
5. تنفيذ قواعد YARA للحمولات المعروفة إذا كانت متاحة من مصادر الذكاء التهديدي
📋 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 activities ECC 2024 A.13.1.1 - Network security perimeter
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management and Vulnerability Assessment SAMA CSF PR.IP-12 - Security patches and updates SAMA CSF DE.CM-1 - Detection and monitoring systems SAMA CSF RS.MI-2 - Incident response and containment
🟡 ISO 27001:2022
ISO 27001:2022 A.12.3.1 - Segregation of networks ISO 27001:2022 A.14.2.1 - Secure development and change management ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.8.1.1 - Inventory of assets and responsibility
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates PCI DSS 11.2 - Vulnerability scanning and assessment PCI DSS 1.1 - Firewall configuration standards
📦 Affected Products / CPE 1 entries
tenda:hg9_firmware:300001138
📊 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 ✓ Yes
Patch ✓ Yes
Published 2026-02-22
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
9.1
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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