← Vulnerability feed

Vulnerability record · CVE-2017-8218 · published 25 April 2017

CVE-2017-8218: Tp-link c2 firmware insecure default initialization vulnerability

Tp Link · C2 Firmware

vsftpd on TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n has a backdoor admin account with the 1234 password, a backdoor guest account with the guest password, and a backdoor test account with the test password.

9.8 CVSS 3.0 Critical EPSS 2.0% · top 19.9% CWE-1188 · Insecure default initialization
9.8CVSS 3.0 base score, v2 10.0
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

vsftpd on TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n has a backdoor admin account with the 1234 password, a backdoor guest account with the guest password, and a backdoor test account with the test password.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://pierrekim.github.io/blog/2017-02-09-tplink-c2-and-c20i-vulnerable.html ExploitTechnical DescriptionThird Party Advisory
https://pierrekim.github.io/blog/2017-02-09-tplink-c2-and-c20i-vulnerable.html ExploitTechnical DescriptionThird Party Advisory

Track CVE-2017-8218 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2017-8220Tp-link c2 firmware os command injection vulnerabilityTP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n allow remote code execution with a single HTTP request by plac…EPSS 37%6.5CVE-2017-8219Tp-link c2 firmware improper input validation vulnerabilityTP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n allow DoSing the HTTP server via a crafted Cookie header to th…EPSS 1.2%5.3CVE-2017-8217Tp-link c2 firmware missing authorization vulnerabilityTP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n have too permissive iptables rules, e.g., SNMP is not blocked …EPSS 0.94%5.3CVE-2025-48927TeleMessage Spring Boot Actuator heap dump endpoint exposed by insecure defaultTeleMessage through 2025-05-05 ships with Spring Boot Actuator configured to expose the /heapdump endpoint. Because this is an insecure default initi…KEVEPSS 11%analysed9.8CVE-2023-27524Apache Superset default SECRET_KEY allows session forgery and auth bypassApache Superset versions up to and including 2.0.1 ship with a default SECRET_KEY that, if left unchanged, lets an attacker forge signed session cook…KEVEPSS 97%analysed9.8CVE-2023-6448Unitronics VisiLogic default admin password in Vision and Samba PLCs/HMIsUnitronics VisiLogic before 9.9.00, used with Vision and Samba PLCs and HMIs, ships with a default administrative password. Because the credential is…KEVEPSS 2.1%analysed9.8CVE-2022-24706Apache CouchDB default install allows unauthenticated admin accessApache CouchDB before 3.2.2 ships with an insecure default initialization that lets an unauthenticated attacker reach an improperly secured installat…KEVEPSS 93%analysed9.8CVE-2020-13927Apache Airflow Experimental API missing authentication by defaultAirflow's Experimental API defaulted to allowing all requests without authentication, so any reachable instance exposed its API to unauthenticated ca…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2017-8218), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.