CVE-2017-20223

CRITICAL

Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-20223. PoCs published by LiquidWorm.

AI-analyzed exploit summary The document describes an Insecure Direct Object Reference (IDOR) vulnerability in Telesquare SKT LTE Router SDT-CS3B1, allowing unauthorized access to sensitive information via direct URL access. It lists multiple endpoints that leak system, network, and configuration details without requiring authentication.

Description

Telesquare SKT LTE Router SDT-CS3B1 firmware version 1.2.0 contains an insecure direct object reference vulnerability that allows attackers to bypass authorization and access resources by manipulating user-supplied input parameters. Attackers can directly reference objects in the system to retrieve sensitive information and access functionalities without proper access controls.

Exploits (1)

exploitdb WRITEUP
by LiquidWorm · textwebappshardware
https://www.exploit-db.com/exploits/43402

The document describes an Insecure Direct Object Reference (IDOR) vulnerability in Telesquare SKT LTE Router SDT-CS3B1, allowing unauthorized access to sensitive information via direct URL access. It lists multiple endpoints that leak system, network, and configuration details without requiring authentication.

Classification
Writeup 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Telesquare SKT LTE Router SDT-CS3B1 (FwVer: SDT-CS3B1, sw version 1.2.0)
No auth needed
Prerequisites: network access to the router
devstral-2 · analyzed Mar 16, 2026 Full analysis →

References (6)

Core 6
Core References
Third Party Advisory third-party-advisory
Zero Science Lab Disclosure
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5445.php
Exploit exploit
Exploit DB
https://www.exploit-db.com/exploits/43402/
Exploit exploit
Packet Storm Security
https://packetstormsecurity.com/files/145551
Third Party Advisory third-party-advisory
CXSecurity
https://cxsecurity.com/issue/WLB-2017120297
Vdb Entry vdb-entry
IBM X-Force Exchange
https://exchange.xforce.ibmcloud.com/vulnerabilities/136993
Third Party Advisory third-party-advisory
VulnCheck Advisory: Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference
https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-insecure-direct-object-reference

Scores

CVSS v3 9.8
EPSS 0.0052
EPSS Percentile 40.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-639
Status published
Products (2)
Telesquare/SDT-CS3B1 1.2.0
telesquare/sdt-cs3b1_firmware 1.2.0
Published Mar 16, 2026
Tracked Since Mar 16, 2026