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Vulnerability record · CVE-2017-8217 · published 25 April 2017

CVE-2017-8217: Tp-link c2 firmware missing authorization vulnerability

Tp Link · C2 Firmware

TP-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 on any interface.

5.3 CVSS 3.0 Medium EPSS 0.94% · top 40.6% CWE-862 · Missing authorization
5.3CVSS 3.0 base score, v2 5.0
0.94%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

TP-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 on any interface.

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

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

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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%9.8CVE-2017-8218Tp-link c2 firmware insecure default initialization vulnerabilityvsftpd 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,…EPSS 2.0%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%9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed7.8CVE-2022-0492Linux kernel cgroups v1 release_agent privilege escalation and container escapeThe Linux kernel's cgroup_release_agent_write in kernel/cgroup/cgroup-v1.c mishandles authorization, letting the cgroups v1 release_agent feature be …KEVEPSS 5.5%analysed9.9CVE-2024-57726SimpleHelp missing authorization lets low-privilege technicians escalate to adminSimpleHelp remote support software v5.5.7 and earlier fails to properly authorize API key creation, allowing low-privilege technicians to mint API ke…KEVEPSS 67%analysed8.8CVE-2023-52163Digiever DS-2105 Pro time_tzsetup.cgi command injectionDigiever DS-2105 Pro firmware 3.1.0.71-11 exposes time_tzsetup.cgi to command injection, and the record also maps the issue to CWE-862 missing author…KEVEPSS 97%analysed6.6CVE-2025-40602SonicWall SMA1000 management console missing authorization privilege escalationThe SonicWall SMA1000 appliance management console (AMC) contains a local privilege escalation flaw caused by insufficient authorization, mapped to C…KEVEPSS 2.8%analysed

Source: NIST National Vulnerability Database (record CVE-2017-8217), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.