CVE-2017-20223

critical

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.

References

Advisories
More

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5445.php

https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-insecure-direct-object-reference

https://www.exploit-db.com/exploits/43402/

https://packetstormsecurity.com/files/145551

https://exchange.xforce.ibmcloud.com/vulnerabilities/136993

https://cxsecurity.com/issue/WLB-2017120297

Details

Source: Mitre, NVD

Published: 2026-03-16

Updated: 2026-04-14

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: Critical

EPSS

EPSS: 0.00053