CVE-2017-20223 Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference
Attackers can bypass authorization and access sensitive resources by manipulating input parameters in Telesquare SKT LTE Router firmware.
- 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-2017-20223?
CVE-2017-20223 is a critical 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 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.
Weakness: CWE-639
Which versions are affected by CVE-2017-20223?
It affects 1 product.
Products include Telesquare Sdt-Cs3b1 Firmware.
How do I fix CVE-2017-20223?
No fix has been published for CVE-2017-20223 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-2017-20223 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20223 exists.
Other vulnerabilities in Telesquare SDT-CS3B1
- CVE-2021-46422 Command injection in n/a
- CVE-2018-12526 Hardcoded credentials in n/a
- CVE-2017-20224 Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload
- CVE-2017-20222 Telesquare SKT LTE Router SDT-CS3B1 Unauthenticated Remote Reboot
- CVE-2017-20221 Telesquare SKT LTE Router SDT-CS3B1 CSRF System Command Execution
Sources
Also known as GHSA-hc2g-56j9-8384.