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Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 3h Global malware Technology and Cloud Services HIGH 3h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 3h Global malware Technology and Cloud Services HIGH 3h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 3h Global malware Technology and Cloud Services HIGH 3h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h
Vulnerabilities

CVE-2021-26829

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
OpenPLC ScadaBR Cross-Site Scripting Vulnerability (CVE-2021-26829)
Published: Nov 28, 2025  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

OpenPLC ScadaBR Cross-site Scripting Vulnerability — OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.

🤖 AI Executive Summary

OpenPLC ScadaBR contains a critical cross-site scripting (XSS) vulnerability in the system_settings.shtm component that allows attackers to inject malicious scripts. This vulnerability can lead to unauthorized access, data theft, and control system compromise in industrial environments.

📄 Description (Arabic)

ثغرة البرمجة النصية عبر المواقع (XSS) في OpenPLC ScadaBR تسمح للمهاجمين بحقن رموز ضارة عبر واجهة system_settings.shtm. يمكن للمهاجمين استغلال هذه الثغرة للوصول إلى بيانات حساسة أو السيطرة على أنظمة التحكم الصناعية. هذا يشكل خطراً كبيراً على البنية التحتية الحرجة والعمليات الصناعية.

🤖 ملخص تنفيذي (AI)

OpenPLC ScadaBR يحتوي على ثغرة حرجة في البرمجة النصية عبر المواقع (XSS) في مكون system_settings.shtm تسمح للمهاجمين بحقن برامج نصية ضارة. يمكن لهذه الثغرة أن تؤدي إلى الوصول غير المصرح به وسرقة البيانات وتعريض أنظمة التحكم الصناعية للخطر.

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 19:05
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
energy government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
Update OpenPLC ScadaBR to the latest patched version immediately. Implement input validation and output encoding for all user inputs in system_settings.shtm. Deploy Web Application Firewall (WAF) rules to detect and block XSS payloads. Restrict access to system_settings.shtm to authorized administrators only using network segmentation and access controls.
🔧 خطوات المعالجة (العربية)
قم بتحديث OpenPLC ScadaBR إلى أحدث إصدار معدل فوراً. قم بتطبيق التحقق من صحة المدخلات وترميز المخرجات لجميع مدخلات المستخدم في system_settings.shtm. قم بنشر قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن حمولات XSS وحجبها. قيد الوصول إلى system_settings.shtm للمسؤولين المصرح لهم فقط باستخدام تقسيم الشبكة وعناصر التحكم في الوصول.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
2.1 2.2 3.1 3.2
🔵 SAMA CSF
ID.BE-1 PR.AC-1 PR.AC-3 DE.CM-1
🟡 ISO 27001:2022
A.6.1.1 A.6.2.1 A.13.1.1 A.14.2.1
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
OpenPLC:ScadaBR
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS13.57%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2025-12-19
Published 2025-11-28
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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