CVE-2017-20222

Name: CVE-2017-20222
Creator: NVD / NIST
Published: 2026-03-16T14:17:52.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2017-20222 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

CVSS 4.0

8.7/10

CVSS: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

EPSS Probability

0.71%

48.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Telesquare	Sdt-Cs3b1 Firmware	1.2.0

References

https://cxsecurity.com/issue/WLB-2017120300Exploit, Issue Tracking
https://exchange.xforce.ibmcloud.com/vulnerabilities/136825Third Party Advisory
https://packetstormsecurity.com/files/145555Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/43401/Exploit, Third Party Advisory, VDB Entry
https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-unauthenticated-remote-rebootThird Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5444.phpExploit, Third Party Advisory

Timeline

Published: Mar 16, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2017-20222?

How severe is CVE-2017-20222?

CVE-2017-20222 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2017-20222?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-20222?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST