CVE-2017-20222

Telesquare SKT LTE Router SDT-CS3B1 Unauthenticated Remote Reboot

Telesquare SKT LTE Router SDT-CS3B1 software version 1.2.0 contains an unauthenticated remote reboot vulnerability that allows attackers to trigger device reboot without authentication. Attackers can send POST requests to the lte.cgi endpoint with the Command=Reboot parameter to cause denial of service by forcing the router to restart.

Affected

Telesquare · SDT-CS3B1

CVSS v4.0 VULNCHECK

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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 VULNCHECK

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.72% chance of exploitation in the next 30 days, 53rd percentile

Published

2026-03-16

Updated

2026-04-07

Proof-of-concept exploits (2)

• https://packetstormsecurity.com/files/145555
• https://www.exploit-db.com/exploits/43401/

Security advisories

• https://exchange.xforce.ibmcloud.com/vulnerabilities/136825
• https://www.exploit-db.com/exploits/43401
• https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-unauthenticated-…
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5444.php
• https://cxsecurity.com/issue/WLB-2017120300

References

• CVE Record
• NVD entry