CVE-2025-63258
📋 TL;DR
A remote command execution vulnerability in H3C ERG3/ERG5 series routers, XiaoBei series routers, cloud gateways, and wireless access points allows attackers to execute arbitrary commands by injecting crafted commands into the sessionid parameter. This affects organizations using these specific H3C networking devices with vulnerable firmware versions. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- H3C ERG3 series routers
- H3C ERG5 series routers
- XiaoBei series routers
- H3C cloud gateways
- H3C wireless access points
⚠️ 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 attackers to intercept network traffic, pivot to internal networks, deploy malware, or use device as part of botnet.
Likely Case
Attackers gain administrative access to device, modify configurations, intercept sensitive data, or disrupt network operations.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Exploitation requires sending crafted HTTP requests to vulnerable web interfaces. No authentication required based on CWE-77 (Command Injection) pattern.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check H3C advisory for specific patched versions
Vendor Advisory: https://zhiliao.h3c.com/Theme/details/232571
Restart Required: Yes
Instructions:
1. Check current firmware version. 2. Visit H3C support portal. 3. Download appropriate firmware update. 4. Backup configuration. 5. Apply firmware update via web interface or CLI. 6. Reboot device. 7. Verify update successful.
🔧 Temporary Workarounds
Disable Web Management Interface
allDisable HTTP/HTTPS management interfaces if not required for operations
telnet/ssh to device
system-view
undo ip http enable
undo ip https enable
Restrict Management Access
allLimit management interface access to specific trusted IP addresses only
telnet/ssh to device
system-view
acl number 2000
rule permit source [trusted-ip] 0
rule deny source any
interface [management-interface]
ip access-group 2000 inbound
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict firewall rules
- Implement network monitoring for unusual HTTP requests to device management interfaces
🔍 How to Verify
Check if Vulnerable:
Check device firmware version matches affected versions list. Test by attempting to inject commands in sessionid parameter (only in controlled environment).Check Version:
display version (CLI) or check web interface System Information pageVerify Fix Applied:
Verify firmware version updated to non-vulnerable version. Test command injection attempts no longer succeed.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests with sessionid parameter containing shell metacharacters
- Multiple failed login attempts followed by command-like strings in requests
- Device configuration changes from unknown sources
Network Indicators:
- HTTP requests to device management interfaces containing pipe characters, semicolons, or backticks in sessionid parameter
- Unexpected outbound connections from network devices
SIEM Query:
source_ip="device_management_interface" AND http_uri CONTAINS "sessionid" AND (http_query CONTAINS "|" OR http_query CONTAINS ";" OR http_query CONTAINS "`")