CVE-2025-25525
📋 TL;DR
A buffer overflow vulnerability in H3C FA3010L access points allows attackers to crash devices or execute arbitrary commands by sending specially crafted firewall rule configuration requests. This affects organizations using H3C FA3010L access points with vulnerable firmware versions. The vulnerability stems from insufficient input validation when processing firewall rule settings.
💻 Affected Systems
- H3C FA3010L 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
Remote code execution leading to complete device compromise, lateral movement within the network, and persistent backdoor installation.
Likely Case
Device crash causing denial of service for connected users, requiring physical or remote reboot to restore functionality.
If Mitigated
Limited impact with proper network segmentation and firewall rules preventing unauthorized access to management interfaces.
🎯 Exploit Status
Exploitation requires access to firewall rule configuration interface, which typically requires authentication. The GitHub reference shows technical details but not a complete weaponized exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Monitor H3C security advisories for patch release. 2. Check vendor support portal for firmware updates. 3. Apply firmware update when available following vendor instructions.
🔧 Temporary Workarounds
Restrict management interface access
allLimit access to the access point management interface to trusted IP addresses only
Configure ACL rules on upstream firewall to restrict access to AP management IP/ports
Disable remote management
allDisable web/SSH/Telnet management from untrusted networks
Configure AP to only allow management from specific VLAN or interface
🧯 If You Can't Patch
- Segment affected access points on isolated VLANs with strict firewall rules
- Implement network monitoring for unusual firewall rule modification attempts
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface (System > Device Information) or CLI command 'display version'Check Version:
display versionVerify Fix Applied:
Verify firmware version is updated beyond SWFA1B0V100R005 when patch becomes available📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by firewall rule modifications
- Unexpected device reboots or crashes
Network Indicators:
- Unusual traffic patterns to/from access point management ports (typically 80, 443, 23)
- Multiple malformed HTTP/HTTPS requests to firewall configuration endpoints
SIEM Query:
source_ip="AP_MANAGEMENT_IP" AND (event_type="authentication_failure" OR event_type="configuration_change")