CVE-2025-11366
📋 TL;DR
N-central versions before 2025.4 contain a path traversal vulnerability that allows attackers to bypass authentication mechanisms. This affects all organizations using vulnerable N-central versions for network management and monitoring.
💻 Affected Systems
- N-central
📦 What is this software?
N Central by N Able
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing unauthorized access to sensitive data, configuration changes, and potential lateral movement across managed networks.
Likely Case
Unauthorized access to administrative functions, data exfiltration, and privilege escalation within the N-central platform.
If Mitigated
Limited impact if proper network segmentation, authentication controls, and monitoring are in place to detect anomalous access patterns.
🎯 Exploit Status
Path traversal vulnerabilities typically have low exploitation complexity and can be exploited without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.4 or later
Vendor Advisory: https://me.n-able.com/s/security-advisory/aArVy0000000rcDKAQ/cve202511366-ncentral-authentication-bypass-via-path-traversal
Restart Required: Yes
Instructions:
1. Backup current configuration and data. 2. Download N-central 2025.4 or later from N-able portal. 3. Apply the update following vendor documentation. 4. Restart services as required. 5. Verify successful update.
🔧 Temporary Workarounds
Network Segmentation
allRestrict access to N-central to trusted networks only
Web Application Firewall Rules
allBlock path traversal patterns at the WAF layer
Add WAF rule to block requests containing '../' patterns
🧯 If You Can't Patch
- Implement strict network access controls to limit N-central access to essential personnel only
- Enable detailed logging and monitoring for authentication bypass attempts and unusual access patterns
🔍 How to Verify
Check if Vulnerable:
Check N-central version in administration console or via 'n-central --version' commandCheck Version:
n-central --versionVerify Fix Applied:
Verify version is 2025.4 or later and test authentication controls📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful access
- Unusual path traversal patterns in access logs
- Access from unexpected IP addresses
Network Indicators:
- HTTP requests containing '../' patterns to N-central endpoints
- Unauthorized API calls to administrative endpoints
SIEM Query:
source="n-central" AND (uri="*../*" OR (event="auth_failure" AND event="auth_success" within 5s))