CVE-2024-36526
📋 TL;DR
ZKTeco ZKBio CVSecurity v6.1.1 contains a hardcoded cryptographic key (CWE-259), allowing attackers to decrypt sensitive data or bypass authentication. This affects all installations of version 6.1.1. The vulnerability enables unauthorized access to protected information and system functions.
💻 Affected Systems
- ZKTeco ZKBio CVSecurity
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise: attackers decrypt all encrypted data, bypass authentication entirely, and gain administrative control over the security system.
Likely Case
Unauthorized access to sensitive video footage, user credentials, and system logs; potential manipulation of security settings.
If Mitigated
Limited impact if system is isolated behind firewalls with strict network controls and no external access.
🎯 Exploit Status
The hardcoded key is publicly documented in GitHub references; exploitation requires minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No vendor advisory found in provided references
Restart Required: No
Instructions:
1. Check vendor website for updated version. 2. If available, download and install patched version. 3. Verify hardcoded key has been removed from new installation.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to ZKBio CVSecurity system to prevent exploitation.
Use firewall rules to block all inbound/outbound traffic except from trusted management IPs
Disable External Access
allRemove system from internet exposure to prevent remote attacks.
Configure firewall to deny WAN access to ZKBio CVSecurity ports
🧯 If You Can't Patch
- Decommission vulnerable version and replace with alternative security software
- Implement strict network segmentation and monitor all access attempts to the system
🔍 How to Verify
Check if Vulnerable:
Check installed version in ZKBio CVSecurity interface; if version is 6.1.1, system is vulnerable.Check Version:
Check version in ZKBio CVSecurity application interface or installation directoryVerify Fix Applied:
Verify installation is no longer version 6.1.1; check with vendor for confirmation that hardcoded key has been removed.📡 Detection & Monitoring
Log Indicators:
- Unauthorized authentication attempts
- Unexpected decryption activities
- Access from unfamiliar IP addresses
Network Indicators:
- Traffic to/from ZKBio CVSecurity on unusual ports
- Decryption attempts using known hardcoded key patterns
SIEM Query:
source="zkbio" AND (event_type="authentication" AND result="failure") OR (event_type="decryption" AND key="hardcoded_pattern")