CVE-2025-56130
📋 TL;DR
This CVE describes an OS command injection vulnerability in Ruijie RG-S1930 switches that allows attackers to execute arbitrary commands via a crafted POST request to the module_update endpoint. Attackers can achieve remote code execution with network access to the vulnerable device. Organizations using Ruijie RG-S1930 switches with the affected firmware are at risk.
💻 Affected Systems
- Ruijie RG-S1930
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the network switch allowing attackers to pivot to other network segments, intercept/modify traffic, deploy persistent backdoors, or use the device as a launch point for further attacks.
Likely Case
Attackers gain administrative control of the switch, enabling traffic interception, network disruption, credential harvesting, and lateral movement within the network.
If Mitigated
Limited impact due to network segmentation, strict access controls, and monitoring that detects and blocks exploitation attempts.
🎯 Exploit Status
The vulnerability requires sending a crafted POST request to the vulnerable endpoint. Public references include exploit details and proof-of-concept information.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check Ruijie official website for security advisories and firmware updates. Apply any available patches immediately.
🔧 Temporary Workarounds
Restrict Network Access
allBlock access to the switch management interface from untrusted networks and limit internal access to authorized administrative hosts only.
Use firewall rules to restrict access to switch management IP/ports
Implement network segmentation to isolate management traffic
Disable Web Management Interface
allIf possible, disable the web management interface and use CLI or other secure management methods.
Configure via CLI: no ip http server
no ip http secure-server
🧯 If You Can't Patch
- Implement strict network access controls to limit which hosts can communicate with the switch management interface
- Deploy network intrusion detection/prevention systems to monitor for exploitation attempts and block malicious traffic
🔍 How to Verify
Check if Vulnerable:
Check firmware version via CLI: show version | include S1930SWITCH. If version is S1930SWITCH_3.0(1)B11P230, the device is vulnerable.Check Version:
show version | include S1930SWITCHVerify Fix Applied:
After applying any vendor patch, verify the firmware version has been updated to a version later than S1930SWITCH_3.0(1)B11P230.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /usr/local/lua/dev_config/ace_sw.lua
- Suspicious command execution in system logs
- Multiple failed authentication attempts followed by successful POST requests
Network Indicators:
- Unusual outbound connections from the switch to external IPs
- POST requests to switch management interface containing shell metacharacters or command injection patterns
SIEM Query:
source="switch_logs" AND (uri="/usr/local/lua/dev_config/ace_sw.lua" OR cmd="module_update") AND (method="POST")