CVE-2025-65753
📋 TL;DR
A TLS certificate validation vulnerability in Guardian Gryphon v01.06.0006.22 allows attackers to bypass authentication and execute arbitrary commands with root privileges. This affects all systems running the vulnerable version of Guardian Gryphon software. Attackers can gain complete control over affected systems.
💻 Affected Systems
- Guardian Gryphon
⚠️ 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 with root-level command execution, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Attackers gain root access to vulnerable systems, enabling credential theft, data manipulation, and deployment of ransomware or other malware.
If Mitigated
Limited impact if systems are isolated, have strict network controls, and attackers cannot reach vulnerable TLS endpoints.
🎯 Exploit Status
GitHub repository contains proof-of-concept code. Exploitation requires network access to TLS endpoints but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://gryphon.com
Restart Required: Yes
Instructions:
1. Check vendor advisory at gryphon.com for patch availability. 2. If patch exists, download and apply following vendor instructions. 3. Restart Guardian Gryphon services. 4. Verify fix using verification steps.
🔧 Temporary Workarounds
Disable TLS/HTTPS Access
allTemporarily disable TLS/HTTPS endpoints to prevent exploitation while awaiting patch.
# Consult Guardian Gryphon documentation for TLS disable procedure
Network Segmentation
linuxRestrict network access to Guardian Gryphon TLS ports using firewall rules.
# Example: iptables -A INPUT -p tcp --dport 443 -j DROP
# Adjust port based on your configuration
🧯 If You Can't Patch
- Isolate affected systems from internet and sensitive internal networks
- Implement strict network access controls and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check Guardian Gryphon version. If version is exactly v01.06.0006.22, system is vulnerable.Check Version:
# Check Guardian Gryphon version in administration interface or configuration filesVerify Fix Applied:
After patching, verify version has changed from v01.06.0006.22 and test TLS certificate validation functionality.📡 Detection & Monitoring
Log Indicators:
- Unexpected root-level command execution
- Failed TLS certificate validation attempts
- Unauthorized access to privileged endpoints
Network Indicators:
- Unusual TLS handshake patterns to Guardian Gryphon ports
- Traffic to/from unexpected IP addresses on TLS ports
SIEM Query:
source="guardian_gryphon" AND (event_type="authentication_failure" OR event_type="privilege_escalation")