CVE-2025-45988
📋 TL;DR
This CVE describes multiple command injection vulnerabilities in Blink routers where attackers can execute arbitrary commands via the cmd parameter in the bs_SetCmd function. The vulnerability affects multiple Blink router models and firmware versions, allowing remote code execution with high impact. Anyone using the affected router models with vulnerable firmware versions is at risk.
💻 Affected Systems
- Blink BL-WR9000
- Blink BL-AC2100_AZ3
- Blink BL-X10_AC8
- Blink BL-LTE300
- Blink BL-F1200_AT1
- Blink BL-X26_AC8
- Blink BLAC450M_AE4
- Blink BL-X26_DA3
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing attackers to execute arbitrary commands, pivot to internal networks, intercept traffic, install persistent backdoors, and use the device for botnet activities.
Likely Case
Remote attackers gaining shell access to the router, modifying configurations, intercepting network traffic, and potentially compromising connected devices.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering and network segmentation prevents lateral movement.
🎯 Exploit Status
The GitHub reference contains technical details about the vulnerability, making exploitation straightforward for attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Blink vendor website for security advisories. 2. If patches are available, download the latest firmware. 3. Backup current router configuration. 4. Upload and apply the new firmware through the web interface. 5. Verify the update was successful and reconfigure if necessary.
🔧 Temporary Workarounds
Network Segmentation and Access Control
allIsolate affected routers in separate network segments and restrict management interface access
Firewall Rules to Block Management Interface
linuxConfigure firewall to block external access to router management interfaces
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
iptables -A INPUT -p tcp --dport 8080 -j DROP
🧯 If You Can't Patch
- Replace affected routers with different models that don't have this vulnerability
- Implement strict network monitoring and intrusion detection for suspicious router traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under System Status or About sections. Compare against affected versions list.Check Version:
Login to router web interface and navigate to System Status or About page to view firmware version.Verify Fix Applied:
After patching, verify firmware version has changed to a non-vulnerable version. Test management interface functionality remains intact.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed login attempts followed by successful access
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns inconsistent with normal router operation
- Port scanning originating from router
SIEM Query:
source="router_logs" AND (cmd="*;*" OR cmd="*|*" OR cmd="*`*" OR cmd="*$(*)")