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Vulnerabilities

CVE-2026-7057

High ⚡ Exploit Available
CWE-119 — Weakness Type
Published: Apr 26, 2026  ·  Modified: May 3, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A flaw has been found in Tenda F456 1.0.0.5. The affected element is an unknown function of the file /goform/setcfm of the component httpd. This manipulation of the argument funcname/funcpara1 causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been published and may be used.

🤖 AI Executive Summary

A critical buffer overflow vulnerability (CVE-2026-7057) exists in Tenda F456 router firmware version 1.0.0.5, affecting the httpd component's /goform/setcfm endpoint. The vulnerability allows remote attackers to execute arbitrary code by manipulating the funcname/funcpara1 parameters, with a CVSS score of 8.8. No patch is currently available, making immediate mitigation through network controls essential for Saudi organizations.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 29, 2026 17:48
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi telecommunications infrastructure (STC, Mobily, Zain) and enterprise networks using Tenda F456 routers as edge devices. Government agencies (NCA, NCSC) and banking sector (SAMA-regulated institutions) face critical risk if these routers are deployed in network perimeters. Healthcare facilities and energy sector organizations (ARAMCO subsidiaries) using these devices for network access are particularly vulnerable to remote code execution leading to data exfiltration, lateral movement, and operational disruption.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Government (NCA, NCSC) Banking (SAMA-regulated institutions) Healthcare Energy (ARAMCO, subsidiaries) Enterprise Networks
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda F456 devices running firmware 1.0.0.5 in your network using network scanning tools (Nmap, Shodan queries)
2. Isolate affected devices from critical network segments or disable remote management access
3. Implement network-level access controls: block external access to port 80/443 on these devices using firewalls
4. Monitor for exploitation attempts targeting /goform/setcfm endpoint

COMPENSATING CONTROLS:
5. Deploy Web Application Firewall (WAF) rules to block requests containing 'setcfm' or suspicious funcname/funcpara1 parameters
6. Implement network segmentation to restrict router access to authorized administrative IPs only
7. Enable logging on upstream firewalls for all traffic to affected devices

PATCHING GUIDANCE:
8. Contact Tenda support for firmware updates; check vendor security advisories regularly
9. Plan replacement of Tenda F456 devices with patched alternatives from trusted vendors
10. Maintain inventory of all Tenda devices and firmware versions for tracking

DETECTION RULES:
11. IDS/IPS: Alert on POST requests to /goform/setcfm with unusual parameter lengths (>256 bytes)
12. Log analysis: Monitor for HTTP 200 responses followed by device reboot or unexpected process execution
13. Network monitoring: Flag connections from external IPs to port 80/443 on Tenda devices
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda F456 التي تعمل بالإصدار 1.0.0.5 في شبكتك باستخدام أدوات المسح (Nmap، استعلامات Shodan)
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة في الشبكة أو تعطيل الوصول الإداري البعيد
3. تطبيق عناصر التحكم في الوصول على مستوى الشبكة: حظر الوصول الخارجي إلى المنافذ 80/443 على هذه الأجهزة باستخدام جدران الحماية
4. مراقبة محاولات الاستغلال التي تستهدف نقطة النهاية /goform/setcfm

عناصر التحكم البديلة:
5. نشر قواعد جدار تطبيقات الويب (WAF) لحظر الطلبات التي تحتوي على 'setcfm' أو معاملات funcname/funcpara1 المريبة
6. تطبيق تقسيم الشبكة لتقييد وصول جهاز التوجيه إلى عناوين IP الإدارية المصرح بها فقط
7. تفعيل السجلات على جدران الحماية العليا لجميع حركة المرور إلى الأجهزة المتأثرة

إرشادات التصحيح:
8. الاتصال بدعم Tenda للحصول على تحديثات البرامج الثابتة؛ التحقق من نشرات أمان البائع بانتظام
9. التخطيط لاستبدال أجهزة Tenda F456 ببدائل معصومة من بائعين موثوقين
10. الحفاظ على جرد لجميع أجهزة Tenda وإصدارات البرامج الثابتة للتتبع

قواعد الكشف:
11. IDS/IPS: تنبيه على طلبات POST إلى /goform/setcfm بأطوال معاملات غير عادية (>256 بايت)
12. تحليل السجل: مراقبة استجابات HTTP 200 متبوعة بإعادة تشغيل الجهاز أو تنفيذ عملية غير متوقعة
13. مراقبة الشبكة: وضع علم على الاتصالات من عناوين IP خارجية إلى المنافذ 80/443 على أجهزة Tenda
📋 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.12.3.1 - Configuration management
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset management and vulnerability identification SAMA CSF PR.IP-12 - Security patch management SAMA CSF DE.CM-8 - Malicious code detection
🟡 ISO 27001:2022
ISO 27001:2022 A.12.3.1 - Configuration management ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Secure development and change management
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches for system components PCI DSS 11.2 - Vulnerability scanning and remediation
📦 Affected Products / CPE 1 entries
tenda:f456_firmware:1.0.0.5
📊 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
EPSS0.05%
Exploit ✓ Yes
Patch ✗ No
Published 2026-04-26
Source Feed nvd
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-119
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