CVE-2026-1803
📋 TL;DR
This vulnerability in Ziroom ZHOME A0101 devices allows attackers to gain unauthorized access via SSH using default credentials in the Dropbear SSH service. It affects devices running version 1.0.1.0, potentially enabling remote compromise of smart home systems. The exploit is publicly available but requires specific conditions to execute successfully.
💻 Affected Systems
- Ziroom ZHOME A0101
⚠️ 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 device takeover allowing installation of malware, data theft, lateral movement within home networks, and potential physical safety risks if device controls critical systems.
Likely Case
Unauthorized access to device configuration, surveillance capabilities, and potential use as botnet node or pivot point for attacking other network devices.
If Mitigated
Limited impact with proper network segmentation and credential management, potentially only affecting isolated device functionality.
🎯 Exploit Status
Exploit requires knowledge of default credentials and SSH service accessibility. Attack complexity is rated high in CVE but medium in practice given public documentation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - vendor did not respond to disclosure
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Users must implement workarounds or replace affected devices.
🔧 Temporary Workarounds
Change SSH Credentials
linuxImmediately change default SSH credentials on affected devices
passwd
ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key
service dropbear restart
Disable SSH Service
linuxDisable Dropbear SSH service if remote access is not required
systemctl disable dropbear
service dropbear stop
killall dropbear
🧯 If You Can't Patch
- Network segmentation: Isolate affected devices on separate VLAN with strict firewall rules
- Implement network monitoring for SSH brute force attempts and unusual SSH connections
🔍 How to Verify
Check if Vulnerable:
Attempt SSH connection using documented default credentials: ssh root@[device_ip] with known default passwordCheck Version:
cat /etc/version or check device management interface for firmware versionVerify Fix Applied:
Verify SSH connection fails with default credentials and requires new authentication📡 Detection & Monitoring
Log Indicators:
- Failed SSH authentication attempts from multiple IPs
- Successful SSH logins with default usernames
- Unusual SSH session patterns
Network Indicators:
- SSH traffic to non-standard ports
- Multiple SSH connection attempts from single sources
- SSH traffic to/from unexpected geographic locations
SIEM Query:
source="*ssh*" AND (event="Failed password" OR event="Accepted password") | stats count by src_ip, user