CVE-2025-64128
📋 TL;DR
An OS command injection vulnerability (CWE-78) allows unauthenticated attackers to execute arbitrary commands on affected systems by injecting malicious input. This affects Zenitel VS-IS firmware and related products. The CVSS 10.0 score indicates critical severity with network-based exploitation possible.
💻 Affected Systems
- Zenitel VS-IS firmware
- Zenitel AlphaCom XE
- Zenitel AlphaCom E
- Zenitel Turbine
⚠️ 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 allowing attacker to execute arbitrary commands with highest privileges, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Remote code execution leading to system takeover, data exfiltration, or deployment of malware/backdoors.
If Mitigated
Limited impact if proper input validation and command sanitization are implemented, though some system information disclosure may still occur.
🎯 Exploit Status
No public proof-of-concept available yet, but the vulnerability characteristics suggest weaponization is likely given the high CVSS score and unauthenticated nature.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisories for specific patched versions
Vendor Advisory: https://wiki.zenitel.com/wiki/Downloads#Station_and_Device_Firmware_Package_.28VS-IS.29
Restart Required: Yes
Instructions:
1. Check Zenitel advisory for affected products. 2. Download latest firmware from vendor portal. 3. Backup current configuration. 4. Apply firmware update following vendor instructions. 5. Restart system. 6. Verify patch application.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems from untrusted networks
Input Validation Rules
allImplement strict input validation and sanitization at application layer
🧯 If You Can't Patch
- Implement strict network access controls and firewall rules to limit exposure
- Deploy web application firewall (WAF) with command injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check firmware version against vendor advisory. If running unpatched versions listed in ICSA-25-329-03, system is vulnerable.Check Version:
Check system web interface or CLI for firmware version information specific to Zenitel products.Verify Fix Applied:
Verify firmware version matches patched version from vendor advisory and test input validation functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns
- Suspicious input containing shell metacharacters
- Unexpected process creation
Network Indicators:
- Unusual outbound connections from affected systems
- Traffic to unexpected ports
- Command and control beaconing
SIEM Query:
source="zenitel_logs" AND (command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*" OR command="*&*" OR command="*>*" OR command="*<*")