CVE-2017-20222 Telesquare SKT LTE Router SDT-CS3B1 Unauthenticated Remote Reboot
Unauthenticated attackers can force a remote reboot of the Telesquare LTE router by sending a specific POST request, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-20222?
CVE-2017-20222 is a high-severity missing authorization vulnerability in Telesquare SDT-CS3B1, published on 16 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2017-20222?
It affects 1 product.
Products include Telesquare Sdt-Cs3b1 Firmware.
How do I fix CVE-2017-20222?
No fix has been published for CVE-2017-20222 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2017-20222 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20222 exists.
Other vulnerabilities in Telesquare SDT-CS3B1
- CVE-2021-46422 Command injection in n/a
- CVE-2018-12526 Hardcoded credentials in n/a
- CVE-2017-20223 Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference
- CVE-2017-20224 Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload
- CVE-2017-20221 Telesquare SKT LTE Router SDT-CS3B1 CSRF System Command Execution
Sources
Also known as GHSA-fgv6-prj5-5cx3.