INITIALIZING
📧 info@ciso.sa | 📱 +966550939344 | Riyadh, Kingdom of Saudi Arabia
🔧 Scheduled Maintenance — Saturday 2:00-4:00 AM AST. Some features may be temporarily unavailable.    ●   
💎
Pro Plan 50% Off Unlock all AI features, unlimited reports, and priority support. Upgrade
Search Center
ESC to close
Global vulnerability Multiple sectors CRITICAL 31m Global vulnerability Information Technology / Software Infrastructure CRITICAL 33m Global data_breach Healthcare CRITICAL 49m Global data_breach Mobile Technology / Consumer Electronics HIGH 1h Global ransomware Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt Cryptocurrency and Blockchain CRITICAL 1h Global malware Financial Services, Mobile Payments HIGH 2h Global vulnerability Government and Critical Infrastructure CRITICAL 5h Global apt Cryptocurrency and Blockchain CRITICAL 13h Global malware Financial Services / Cryptocurrency CRITICAL 13h Global vulnerability Multiple sectors CRITICAL 31m Global vulnerability Information Technology / Software Infrastructure CRITICAL 33m Global data_breach Healthcare CRITICAL 49m Global data_breach Mobile Technology / Consumer Electronics HIGH 1h Global ransomware Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt Cryptocurrency and Blockchain CRITICAL 1h Global malware Financial Services, Mobile Payments HIGH 2h Global vulnerability Government and Critical Infrastructure CRITICAL 5h Global apt Cryptocurrency and Blockchain CRITICAL 13h Global malware Financial Services / Cryptocurrency CRITICAL 13h Global vulnerability Multiple sectors CRITICAL 31m Global vulnerability Information Technology / Software Infrastructure CRITICAL 33m Global data_breach Healthcare CRITICAL 49m Global data_breach Mobile Technology / Consumer Electronics HIGH 1h Global ransomware Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt Cryptocurrency and Blockchain CRITICAL 1h Global malware Financial Services, Mobile Payments HIGH 2h Global vulnerability Government and Critical Infrastructure CRITICAL 5h Global apt Cryptocurrency and Blockchain CRITICAL 13h Global malware Financial Services / Cryptocurrency CRITICAL 13h
Vulnerabilities

CVE-2021-27877

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Veritas Backup Exec Agent Improper Authentication Vulnerability — Veritas Backup Exec (BE) Agent contains an improper authentication vulnerability that could allow an attacker unauthorized access to t
Published: Apr 7, 2023  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Veritas Backup Exec Agent Improper Authentication Vulnerability — Veritas Backup Exec (BE) Agent contains an improper authentication vulnerability that could allow an attacker unauthorized access to the BE Agent via SHA authentication scheme.

🤖 AI Executive Summary

CVE-2021-27877 is a critical authentication bypass vulnerability in Veritas Backup Exec Agent (CVSS 9.0) that allows attackers to gain unauthorized access through a flawed SHA authentication scheme. This vulnerability poses severe risk to organizations relying on Backup Exec for data protection and recovery operations. Immediate patching is essential as exploits are publicly available and the vulnerability affects core backup infrastructure security.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 20, 2026 11:02
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability critically impacts Saudi organizations across multiple sectors: Banking sector (SAMA-regulated institutions) faces severe risk to backup integrity and business continuity; Government agencies and NCA-regulated entities risk unauthorized access to sensitive data backups; Healthcare organizations (MOH, private hospitals) could experience data breaches affecting patient records; Energy sector (ARAMCO, utilities) depends on Backup Exec for critical infrastructure protection; Telecom operators (STC, Mobily, Zain) require immediate remediation to protect customer data and network infrastructure backups. The vulnerability enables attackers to bypass authentication entirely, potentially leading to data exfiltration, ransomware deployment, or backup corruption.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Institutions Energy and Utilities Telecommunications Oil and Gas Critical Infrastructure Large Enterprises with Backup Exec deployments
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Veritas Backup Exec Agent installations across your infrastructure using asset discovery tools
2. Isolate affected Backup Exec servers from untrusted networks immediately
3. Implement network segmentation to restrict access to Backup Exec Agent ports (typically 6101-6110)
4. Enable enhanced logging and monitoring on all Backup Exec systems

PATCHING GUIDANCE:
1. Apply Veritas Backup Exec patches immediately (version 20.1 and later contain fixes)
2. Prioritize patching based on criticality: backup servers > backup agents > management consoles
3. Test patches in non-production environment first
4. Schedule patching during maintenance windows with backup redundancy in place

COMPENSATING CONTROLS (if patching delayed):
1. Implement firewall rules to restrict Backup Exec Agent access to authorized backup servers only
2. Deploy network-based intrusion detection signatures for Backup Exec authentication bypass attempts
3. Disable SHA authentication scheme if alternative authentication methods available
4. Implement VPN/IPSec encryption for all Backup Exec communications
5. Monitor for suspicious authentication attempts and failed connections

DETECTION RULES:
1. Monitor for multiple failed authentication attempts to Backup Exec Agent ports
2. Alert on unexpected connections to Backup Exec Agent from non-backup infrastructure
3. Track authentication method changes from SHA to other schemes
4. Monitor for unusual backup job modifications or deletions
5. Implement SIEM rules to detect lateral movement post-authentication bypass
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات وكيل Veritas Backup Exec عبر البنية التحتية باستخدام أدوات اكتشاف الأصول
2. عزل خوادم Backup Exec المتأثرة عن الشبكات غير الموثوقة فوراً
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى منافذ وكيل Backup Exec (عادة 6101-6110)
4. تفعيل السجلات المحسنة والمراقبة على جميع أنظمة Backup Exec

إرشادات التصحيح:
1. تطبيق تصحيحات Veritas Backup Exec فوراً (الإصدار 20.1 والإصدارات الأحدث تحتوي على إصلاحات)
2. أولويات التصحيح بناءً على الأهمية: خوادم النسخ الاحتياطية > وكلاء النسخ الاحتياطية > أجهزة الإدارة
3. اختبار التصحيحات في بيئة غير الإنتاج أولاً
4. جدولة التصحيح خلال نوافذ الصيانة مع وجود تكرار للنسخ الاحتياطية

الضوابط البديلة (إذا تأخر التصحيح):
1. تطبيق قواعد جدار الحماية لتقييد وصول وكيل Backup Exec إلى خوادم النسخ الاحتياطية المصرح بها فقط
2. نشر توقيعات الكشف عن الاختراقات القائمة على الشبكة لمحاولات تجاوز مصادقة Backup Exec
3. تعطيل مخطط مصادقة SHA إذا كانت طرق المصادقة البديلة متاحة
4. تطبيق تشفير VPN/IPSec لجميع اتصالات Backup Exec
5. مراقبة محاولات المصادقة المريبة والاتصالات الفاشلة

قواعد الكشف:
1. مراقبة محاولات المصادقة الفاشلة المتعددة لمنافذ وكيل Backup Exec
2. تنبيهات الاتصالات غير المتوقعة بوكيل Backup Exec من البنية التحتية غير الاحتياطية
3. تتبع تغييرات طريقة المصادقة من SHA إلى أنظمة أخرى
4. مراقبة تعديلات أو حذف مهام النسخ الاحتياطية غير العادية
5. تطبيق قواعد SIEM للكشف عن الحركة الجانبية بعد تجاوز المصادقة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.9.2.1 - User registration and access rights management ECC 2024 A.9.4.3 - Password management systems ECC 2024 A.10.1.1 - Information security event logging ECC 2024 A.12.4.1 - Event logging for user activities ECC 2024 A.14.2.1 - Secure development and change management
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Hardware and software assets are inventoried SAMA CSF PR.AC-1 - Identities and credentials are issued and managed SAMA CSF PR.AC-2 - Physical access is managed SAMA CSF DE.AE-1 - A baseline of network operations is established SAMA CSF DE.CM-1 - The network is monitored to detect potential cybersecurity events
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access control ISO 27001:2022 A.8.2 - User endpoint devices ISO 27001:2022 A.8.3 - User access management ISO 27001:2022 A.9.2 - User access provisioning ISO 27001:2022 A.9.4 - Access rights review ISO 27001:2022 A.12.4 - Logging
🟣 PCI DSS v4.0
PCI DSS 2.1 - Change default vendor-supplied passwords PCI DSS 6.2 - Ensure security patches are installed PCI DSS 7.1 - Limit access to system components PCI DSS 8.1 - Assign unique ID to each person PCI DSS 10.2 - Implement automated audit trails
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Veritas:Backup Exec Agent
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS29.38%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2023-04-28
Published 2023-04-07
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited ransomware
Share this CVE
📣 Found this valuable?
Share it with your cybersecurity network
in LinkedIn 𝕏 X / Twitter 💬 WhatsApp ✈ Telegram
🍪 Privacy Preferences
CISO Consulting — Compliant with Saudi Personal Data Protection Law (PDPL)
We use cookies and similar technologies to provide the best experience on our platform. You can choose which types you accept.
🔒
Essential Always On
Required for the website to function properly. Cannot be disabled.
📋 Sessions, CSRF tokens, authentication, language preferences
📊
Analytics
Help us understand how visitors use the site and improve performance.
📋 Page views, session duration, traffic sources, performance metrics
⚙️
Functional
Enable enhanced features like content personalization and preferences.
📋 Dark/light theme, font size, custom dashboards, saved filters
📣
Marketing
Used to deliver content and ads relevant to your interests.
📋 Campaign tracking, retargeting, social media analytics
Privacy Policy →
CISO AI Assistant
Ask anything · Documents · Support
🔐

Introduce Yourself

Enter your details to access the full assistant

Your info is private and never shared
💬
CyberAssist
Online · responds in seconds
5 / 5
🔐 Verify Your Identity

Enter your email to receive a verification code before submitting a support request.

Enter to send · / for commands 0 / 2000
CISO AI · Powered by Anthropic Claude
✦ Quick Survey Help Us Improve CISO Consulting Your feedback shapes the future of our platform — takes less than 2 minutes.
⚠ Please answer this question to continue

How would you rate your overall experience with our platform?

Rate from 1 (poor) to 5 (excellent)

🎉
Thank you!
Your response has been recorded.