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Vulnerabilities

CVE-2025-9466

High
A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles EtherNet/IP and CIP grammar tests, the device reboots unexpectedly, cau
CWE-400 — Weakness Type
Published: Jan 20, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. During execution of the Achilles EtherNet/IP and CIP grammar tests, the device reboots unexpectedly, causing the Link State Monitor to go down for several seconds.

🤖 AI Executive Summary

CVE-2025-9466 is a denial-of-service vulnerability in Rockwell Automation's ArmorStart® LT firmware affecting EtherNet/IP and CIP protocol handling. The vulnerability causes unexpected device reboots during grammar tests, disrupting Link State Monitor functionality for several seconds. With a CVSS score of 7.5 and no public exploit available, this poses a moderate-to-high risk to industrial control systems in Saudi Arabia, particularly in critical infrastructure sectors.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 3, 2026 05:01
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations operating industrial control systems and critical infrastructure: (1) Energy Sector - Saudi Aramco and downstream petroleum refineries relying on EtherNet/IP networks for SCADA/ICS operations; (2) Water & Electricity - SEC and regional utilities managing water treatment and power distribution systems; (3) Petrochemical Industry - Major chemical processing facilities dependent on networked industrial controllers; (4) Manufacturing - Large-scale industrial facilities using Rockwell Automation equipment; (5) Government Critical Infrastructure - Facilities managing national security and essential services. The DoS condition could disrupt real-time monitoring and control, potentially causing operational delays or safety incidents in time-sensitive environments.
🏢 Affected Saudi Sectors
Energy & Petroleum (Saudi Aramco, refineries) Water & Electricity (SEC, regional utilities) Petrochemical Manufacturing Industrial Manufacturing Government Critical Infrastructure Telecommunications (if using ICS systems)
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all ArmorStart® LT devices in your environment using asset inventory tools and network scanning
2. Assess criticality of affected devices - prioritize those in active SCADA/ICS environments
3. Implement network segmentation to isolate ArmorStart® LT devices from untrusted networks
4. Enable enhanced monitoring of device reboot events and Link State Monitor status

Patching Guidance:
1. Contact Rockwell Automation for available firmware patches addressing CVE-2025-9466
2. Test patches in non-production environments first, following change management procedures
3. Schedule maintenance windows for firmware updates to minimize operational impact
4. Verify patch installation and confirm Link State Monitor stability post-update

Compensating Controls (if patching delayed):
1. Implement network access controls restricting EtherNet/IP traffic to authorized sources only
2. Deploy IDS/IPS rules to detect and block malformed CIP protocol packets
3. Configure device logging to capture reboot events and protocol anomalies
4. Establish redundant monitoring systems to detect Link State Monitor failures
5. Implement rate limiting on EtherNet/IP grammar test execution

Detection Rules:
1. Monitor for unexpected device reboots correlated with EtherNet/IP/CIP traffic patterns
2. Alert on Link State Monitor downtime exceeding normal thresholds
3. Track failed CIP grammar test executions and protocol parsing errors
4. Correlate device reboot events with network traffic analysis for attack patterns
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة ArmorStart® LT في بيئتك باستخدام أدوات جرد الأصول والمسح الشبكي
2. تقييم أهمية الأجهزة المتأثرة - إعطاء الأولوية لتلك الموجودة في بيئات SCADA/ICS النشطة
3. تنفيذ تقسيم الشبكة لعزل أجهزة ArmorStart® LT عن الشبكات غير الموثوقة
4. تفعيل المراقبة المحسنة لأحداث إعادة تشغيل الجهاز وحالة Link State Monitor

إرشادات التصحيح:
1. التواصل مع Rockwell Automation للحصول على تحديثات البرنامج الثابت المتاحة
2. اختبار التصحيحات في بيئات غير الإنتاج أولاً، متبعاً إجراءات إدارة التغيير
3. جدولة نوافذ الصيانة لتحديثات البرنامج الثابت لتقليل التأثير التشغيلي
4. التحقق من تثبيت التصحيح وتأكيد استقرار Link State Monitor بعد التحديث

الضوابط البديلة (إذا تأخر التصحيح):
1. تنفيذ ضوابط الوصول إلى الشبكة لتقييد حركة EtherNet/IP للمصادر المصرح بها فقط
2. نشر قواعد IDS/IPS للكشف عن حزم بروتوكول CIP المشوهة وحجبها
3. تكوين تسجيل الجهاز لالتقاط أحداث إعادة التشغيل والشذوذ في البروتوكول
4. إنشاء أنظمة مراقبة زائدة للكشف عن فشل Link State Monitor
5. تنفيذ تحديد معدل على تنفيذ اختبار قواعس EtherNet/IP

قواعد الكشف:
1. مراقبة إعادة تشغيل الجهاز غير المتوقعة المرتبطة بأنماط حركة EtherNet/IP/CIP
2. التنبيه على توقف Link State Monitor الذي يتجاوز الحدود الطبيعية
3. تتبع فشل تنفيذ اختبار قواعس CIP وأخطاء تحليل البروتوكول
4. ربط أحداث إعادة تشغيل الجهاز بتحليل حركة الشبكة للكشف عن أنماط الهجوم
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities ECC 2024 A.12.3.1 - Segregation of networks ECC 2024 A.12.1.2 - Change management procedures ECC 2024 A.12.4.1 - Event logging and monitoring
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset management and vulnerability identification SAMA CSF PR.IP-12 - System and information integrity SAMA CSF DE.CM-1 - Detection and analysis of anomalies SAMA CSF RS.RP-1 - Response planning and procedures
🟡 ISO 27001:2022
ISO 27001:2022 A.12.3.1 - Segregation of networks ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.12.4.1 - Event logging ISO 27001:2022 A.14.2.1 - Secure development policy
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates PCI DSS 11.2 - Vulnerability scanning and assessment
📦 Affected Products / CPE 1 entries
rockwellautomation:armorstart_lt_firmware
📊 CVSS Score
7.5
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-400
EPSS0.11%
Exploit No
Patch ✓ Yes
Published 2026-01-20
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
7.2
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-400
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