CVE-2026-2753
📋 TL;DR
An absolute path traversal vulnerability in Navtor NavBox allows unauthenticated remote attackers to read arbitrary files from the filesystem. This affects systems running vulnerable versions of Navtor NavBox with the HTTP service exposed. Attackers can access sensitive configuration files and system information.
💻 Affected Systems
- Navtor NavBox
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through exposure of credentials, configuration secrets, or sensitive data leading to further attacks.
Likely Case
Exfiltration of configuration files, system information, and potentially sensitive operational data.
If Mitigated
Limited impact if service runs with minimal privileges and critical files are properly protected.
🎯 Exploit Status
Simple HTTP requests with absolute paths can trigger the vulnerability without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://cydome.io/vulnerability-advisory-cve-2026-2753-in-navtor-navbox-version-4-12-0-3
Restart Required: Yes
Instructions:
1. Monitor vendor channels for security updates. 2. Apply vendor-provided patches when available. 3. Restart affected services after patching.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict access to NavBox HTTP service to trusted networks only.
iptables -A INPUT -p tcp --dport [NAVBOX_PORT] -s [TRUSTED_NETWORK] -j ACCEPT
iptables -A INPUT -p tcp --dport [NAVBOX_PORT] -j DROP
Service Account Hardening
linuxRun NavBox service with minimal privileges to limit file access.
sudo useradd -r -s /bin/false navboxuser
sudo chown -R navboxuser:navboxuser /path/to/navbox
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Deploy web application firewall with path traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Test by sending HTTP requests with absolute file paths to the NavBox service and checking for file content in responses.Check Version:
Check NavBox version through web interface or configuration files.Verify Fix Applied:
Retest exploitation attempts after applying mitigations to confirm they are blocked.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing absolute paths like /etc/passwd or C:\Windows\system32
- Unusual file access patterns from web service
Network Indicators:
- HTTP requests with ../ sequences or absolute paths in URL parameters
SIEM Query:
source="navbox" AND (url="*etc*" OR url="*C:*" OR url="*../*")