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Global ransomware Multiple Sectors / Enterprise CRITICAL 1h Global general Technology and Legal MEDIUM 2h Global ransomware Financial Services / Cryptocurrency CRITICAL 2h Global general Industrial Control Systems / Operational Technology HIGH 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 4h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 5h Global supply_chain Multiple Sectors CRITICAL 5h Global vulnerability Government/Federal Agencies HIGH 5h Global ransomware Multiple Sectors / Enterprise CRITICAL 1h Global general Technology and Legal MEDIUM 2h Global ransomware Financial Services / Cryptocurrency CRITICAL 2h Global general Industrial Control Systems / Operational Technology HIGH 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 4h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 5h Global supply_chain Multiple Sectors CRITICAL 5h Global vulnerability Government/Federal Agencies HIGH 5h Global ransomware Multiple Sectors / Enterprise CRITICAL 1h Global general Technology and Legal MEDIUM 2h Global ransomware Financial Services / Cryptocurrency CRITICAL 2h Global general Industrial Control Systems / Operational Technology HIGH 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 4h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 5h Global supply_chain Multiple Sectors CRITICAL 5h Global vulnerability Government/Federal Agencies HIGH 5h
Vulnerabilities

CVE-2019-25589

Medium
ZOC Terminal 7.23.4 contains a buffer overflow vulnerability in the Shell field of Program Settings that allows local attackers to crash the application by supplying an excessively long string. Attack
CWE-787 — Weakness Type
Published: Mar 22, 2026  ·  Modified: Mar 24, 2026  ·  Source: NVD
CVSS v3
6.2
🔗 NVD Official
📄 Description (English)

ZOC Terminal 7.23.4 contains a buffer overflow vulnerability in the Shell field of Program Settings that allows local attackers to crash the application by supplying an excessively long string. Attackers can paste a crafted payload into the Shell configuration field and trigger a crash when accessing the Command Shell feature.

🤖 AI Executive Summary

ZOC Terminal 7.23.4 contains a buffer overflow vulnerability in the Shell configuration field that allows local attackers to crash the application through an excessively long string input. While currently without a public exploit or patch, this vulnerability could be leveraged for denial of service attacks against terminal emulation environments used in Saudi organizations. The lack of available patches necessitates immediate compensating controls and configuration hardening.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 22, 2026 18:33
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi government agencies, financial institutions, and energy sector organizations that rely on ZOC Terminal for secure remote administration and legacy system access. ARAMCO, SAMA-regulated banks, and NCA-supervised entities using ZOC Terminal for critical infrastructure management face denial of service risks. Telecommunications operators (STC, Mobily) managing network infrastructure through terminal emulation are also at risk. The local-only attack vector limits exposure but poses significant risk in shared administrative environments or when combined with social engineering.
🏢 Affected Saudi Sectors
Government Banking and Financial Services Energy and Utilities Telecommunications Healthcare Critical Infrastructure
⚖️ Saudi Risk Score (AI)
5.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Inventory all ZOC Terminal 7.23.4 installations across the organization
2. Restrict local access to ZOC Terminal configuration files using file system permissions (read-only for non-administrators)
3. Disable or restrict access to the Shell configuration feature where operationally feasible
4. Implement application whitelisting to prevent unauthorized modifications to ZOC Terminal settings

Patching Guidance:
1. Contact ZOC Terminal vendor (EmTec Innovative Solutions) for security updates beyond version 7.23.4
2. Evaluate migration to alternative terminal emulation solutions with active security support
3. If upgrade is unavailable, implement version control and configuration backup procedures

Compensating Controls:
1. Deploy endpoint detection and response (EDR) solutions to monitor ZOC Terminal process crashes and anomalous behavior
2. Implement input validation at the application wrapper level if possible
3. Use configuration management tools to prevent unauthorized Shell field modifications
4. Monitor system logs for repeated application crashes indicating exploitation attempts
5. Restrict ZOC Terminal usage to dedicated administrative workstations with enhanced monitoring

Detection Rules:
1. Alert on ZOC Terminal process crashes with exit codes indicating buffer overflow
2. Monitor for file system access attempts to ZOC Terminal configuration files (zoc.ini, settings files)
3. Log and alert on Shell field configuration changes exceeding 256 characters
4. Track failed Shell command executions following configuration modifications
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع تثبيتات ZOC Terminal 7.23.4 عبر المنظمة
2. تقييد الوصول المحلي إلى ملفات إعدادات ZOC Terminal باستخدام أذونات نظام الملفات (قراءة فقط للمسؤولين)
3. تعطيل أو تقييد الوصول إلى ميزة Shell Configuration حيث يكون ذلك ممكناً من الناحية التشغيلية
4. تطبيق قائمة بيضاء للتطبيقات لمنع التعديلات غير المصرح بها على إعدادات ZOC Terminal

إرشادات التصحيح:
1. الاتصال بمورد ZOC Terminal (EmTec Innovative Solutions) للحصول على تحديثات أمان تتجاوز الإصدار 7.23.4
2. تقييم الهجرة إلى حلول محاكاة طرفية بديلة مع دعم أمان نشط
3. إذا كان الترقية غير متاحة، تطبيق إجراءات التحكم في الإصدارات والنسخ الاحتياطية للإعدادات

الضوابط التعويضية:
1. نشر حلول الكشف والاستجابة على نقاط النهاية (EDR) لمراقبة أعطال عملية ZOC Terminal والسلوك الشاذ
2. تطبيق التحقق من صحة الإدخال على مستوى غلاف التطبيق إن أمكن
3. استخدام أدوات إدارة الإعدادات لمنع التعديلات غير المصرح بها على حقل Shell
4. مراقبة سجلات النظام للأعطال المتكررة للتطبيق مما يشير إلى محاولات الاستغلال
5. تقييد استخدام ZOC Terminal إلى محطات عمل إدارية مخصصة مع مراقبة محسنة

قواعد الكشف:
1. تنبيه عند أعطال عملية ZOC Terminal برموز خروج تشير إلى تجاوز المخزن المؤقت
2. مراقبة محاولات الوصول إلى ملفات إعدادات ZOC Terminal (zoc.ini وملفات الإعدادات)
3. تسجيل والتنبيه على تعديلات حقل Shell التي تتجاوز 256 حرفاً
4. تتبع تنفيذ أوامر Shell الفاشلة بعد تعديلات الإعدادات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information security policies and procedures ECC 2024 A.6.1.1 - Access control and authentication ECC 2024 A.8.1.1 - Asset management and inventory ECC 2024 A.12.2.1 - Change management and configuration control
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management SAMA CSF PR.AC-1 - Access Control SAMA CSF DE.CM-1 - Detection and Analysis SAMA CSF RS.MI-1 - Incident Response and Recovery
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for information security ISO 27001:2022 A.6.1 - Organization of information security ISO 27001:2022 A.8.1 - Asset management ISO 27001:2022 A.12.6 - Change management
📊 CVSS Score
6.2
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorL — Low / Local
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 Medium
CVSS Score6.2
CWECWE-787
Exploit No
Patch ✗ No
Published 2026-03-22
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
5.8
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-787
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