CVE-2025-6918
📋 TL;DR
This SQL injection vulnerability in Ncvav Virtual PBX Software allows attackers to execute arbitrary SQL commands through the application. All systems running Virtual PBX Software versions before 09.07.2025 are affected, potentially exposing sensitive data and system control.
💻 Affected Systems
- Ncvav Virtual PBX Software
⚠️ 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 including data exfiltration, privilege escalation, remote code execution, and full control over the PBX system and connected telephony infrastructure.
Likely Case
Database compromise leading to theft of call records, user credentials, configuration data, and potential disruption of telephony services.
If Mitigated
Limited data exposure if proper input validation and parameterized queries are implemented, with minimal service disruption.
🎯 Exploit Status
SQL injection vulnerabilities typically have low exploitation complexity, especially with CVSS 9.8 score suggesting unauthenticated remote exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version dated 09.07.2025 or later
Vendor Advisory: https://www.usom.gov.tr/bildirim/tr-25-0180
Restart Required: Yes
Instructions:
1. Download latest version from vendor. 2. Backup current configuration and data. 3. Install updated version. 4. Restart PBX services. 5. Verify functionality.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF with SQL injection rules to block malicious requests
Network Segmentation
allRestrict access to PBX management interface to trusted networks only
🧯 If You Can't Patch
- Isolate the PBX system from internet access and restrict to internal network only
- Implement strict input validation and parameterized queries in custom code if accessible
🔍 How to Verify
Check if Vulnerable:
Check software version in administration interface or configuration files. If version date is before 09.07.2025, system is vulnerable.Check Version:
Check vendor documentation for specific version check command. Typically available in web admin interface.Verify Fix Applied:
Confirm version shows 09.07.2025 or later date in administration interface. Test SQL injection attempts should be blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts with SQL syntax
- Unexpected database queries
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, DROP, etc.) to PBX endpoints
- Unusual database connection patterns
SIEM Query:
source="pbx_logs" AND ("sql" OR "syntax" OR "union" OR "select" OR "drop")