Home

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.

PUBLISHED Reserved 2026-03-15 | Published 2026-03-16 | Updated 2026-04-07 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Authorization Bypass Through User-Controlled Key

Product status

1.2.0
affected

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab finder

References

www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5445.php (Zero Science Lab Disclosure) third-party-advisory

www.exploit-db.com/exploits/43402/ (Exploit DB) exploit

packetstormsecurity.com/files/145551 (Packet Storm Security) exploit

cxsecurity.com/issue/WLB-2017120297 (CXSecurity) third-party-advisory

exchange.xforce.ibmcloud.com/vulnerabilities/136993 (IBM X-Force Exchange) vdb-entry

www.vulncheck.com/...-cs3b1-insecure-direct-object-reference (VulnCheck Advisory: Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference) third-party-advisory

cve.org (CVE-2017-20223)

nvd.nist.gov (CVE-2017-20223)

Download JSON