CVE-2025-4477
📋 TL;DR
CVE-2025-4477 is a privilege escalation vulnerability in TeamT5's ThreatSonar Anti-Ransomware software. Remote attackers with intermediate privileges can exploit a specific API to gain highest administrator privileges. Organizations using affected versions of ThreatSonar Anti-Ransomware are vulnerable.
💻 Affected Systems
- TeamT5 ThreatSonar Anti-Ransomware
⚠️ 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
Attackers gain full administrative control over the security software, potentially disabling protection, exfiltrating sensitive data, or using the compromised system as a foothold for lateral movement.
Likely Case
Malicious insiders or compromised accounts escalate privileges to bypass security controls, disable ransomware protection, and maintain persistence in the environment.
If Mitigated
With proper network segmentation, least privilege access, and monitoring, impact is limited to isolated security tool compromise without broader network access.
🎯 Exploit Status
Exploitation requires existing intermediate privileges and knowledge of the vulnerable API endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references; check vendor advisory for exact version
Vendor Advisory: https://www.twcert.org.tw/en/cp-139-10130-c0959-2.html
Restart Required: Yes
Instructions:
1. Download latest version from TeamT5. 2. Install update following vendor instructions. 3. Restart affected systems. 4. Verify successful update.
🔧 Temporary Workarounds
Restrict API Access
allLimit network access to ThreatSonar management interfaces to authorized administrators only.
Use firewall rules to restrict access to ThreatSonar ports (specific ports not provided in references)
Enforce Least Privilege
windowsReview and minimize intermediate privilege accounts that could access ThreatSonar management functions.
Review Active Directory/Windows user groups with ThreatSonar access
🧯 If You Can't Patch
- Isolate ThreatSonar management interfaces on separate VLAN with strict access controls
- Implement enhanced monitoring for privilege escalation attempts and unusual API calls
🔍 How to Verify
Check if Vulnerable:
Check ThreatSonar version against vendor's patched version list; review logs for unauthorized API calls to privilege escalation endpoints.Check Version:
Check ThreatSonar console or installed programs list for version informationVerify Fix Applied:
Confirm ThreatSonar version is updated to vendor's recommended version; test that intermediate users cannot escalate privileges via API.📡 Detection & Monitoring
Log Indicators:
- Unusual API calls from intermediate privilege accounts
- Administrative privilege changes in ThreatSonar logs
- Failed privilege escalation attempts
Network Indicators:
- Unusual traffic patterns to ThreatSonar management API from non-admin sources
SIEM Query:
source="threatsonar" AND (event_type="privilege_escalation" OR api_call="*admin*" OR user_role_change="*")