CVE-2026-0788
📋 TL;DR
CVE-2026-0788 is a persistent cross-site scripting vulnerability in ALGO 8180 IP Audio Alerter devices that allows unauthenticated attackers to inject malicious scripts into the syslog viewing functionality. When exploited, these scripts execute with the privileges of any user viewing the syslog, potentially allowing session hijacking, credential theft, or device compromise. All organizations using ALGO 8180 IP Audio Alerter devices with vulnerable firmware are affected.
💻 Affected Systems
- ALGO 8180 IP Audio Alerter
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover, credential theft from all authenticated users, installation of persistent backdoors, and lateral movement to other network systems.
Likely Case
Session hijacking of administrative users, theft of credentials, defacement of web interface, and potential device configuration changes.
If Mitigated
Limited to web interface manipulation without access to underlying system or network resources.
🎯 Exploit Status
ZDI-CAN-28298 reference suggests proof-of-concept exists in controlled disclosure; exploitation requires only web access and basic XSS knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown specific version - check vendor advisory
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-26-010/
Restart Required: Yes
Instructions:
1. Contact ALGO vendor for patched firmware
2. Backup device configuration
3. Upload and install patched firmware via web UI
4. Reboot device
5. Verify syslog functionality works without XSS
🔧 Temporary Workarounds
Disable Web UI Access
linuxBlock external and internal access to ALGO 8180 web interface
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Network Segmentation
allIsolate ALGO devices to separate VLAN with restricted access
🧯 If You Can't Patch
- Implement strict network access controls to limit web UI access to trusted IPs only
- Deploy web application firewall with XSS protection rules in front of ALGO devices
🔍 How to Verify
Check if Vulnerable:
Test syslog functionality with XSS payloads like <script>alert('test')</script> and check if script executesCheck Version:
Check firmware version via web UI System Status page or SSH if enabledVerify Fix Applied:
After patching, retest with same XSS payloads to confirm scripts no longer execute📡 Detection & Monitoring
Log Indicators:
- Unusual script tags in syslog entries
- Multiple failed XSS attempts in web logs
- Unexpected JavaScript execution in user sessions
Network Indicators:
- HTTP requests containing script tags to ALGO device IPs
- Unusual outbound connections from ALGO devices post-exploitation
SIEM Query:
source="algo_web_logs" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")