CVE-2017-20221

Telesquare SKT LTE Router SDT-CS3B1 CSRF System Command Execution

Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains a cross-site request forgery vulnerability that allows authenticated attackers to execute arbitrary system commands by exploiting missing request validation. Attackers can craft malicious web pages that perform administrative actions when visited by logged-in users, enabling command execution with router privileges.

Affected

Telesquare · SDT-CS3B1

CVSS v4.0 VULNCHECK

5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 NVD

3.5 LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS v3.1 VULNCHECK

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.29% chance of exploitation in the next 30 days, 20th percentile

Published

2026-03-16

Updated

2026-04-07

Proof-of-concept exploits (2)

• https://packetstormsecurity.com/files/145550
• https://www.exploit-db.com/exploits/43400/

Security advisories

• https://exchange.xforce.ibmcloud.com/vulnerabilities/136839
• https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-csrf-system-comm…
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5443.php
• https://cxsecurity.com/issue/WLB-2017120299

References

• CVE Record
• NVD entry