CVE-2017-20221 - CVE House
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Status published Medium CVE-2017-20221

Telesquare SKT LTE Router SDT-CS3B1 CSRF System Command Execution

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • LiquidWorm as Gjoko Krstic of Zero Science Lab

References

More from Telesquare

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CVE-2025-9603
Telesquare TLR-2005KSH internet.cgi command injection
Medium 5.3
CVE-2017-20224
Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload
Critical 9.3
CVE-2017-20223
Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference
Critical 9.3
CVE-2017-20222
Telesquare SKT LTE Router SDT-CS3B1 Unauthenticated Remote Reboot
High 8.7

Affected Vendor

Affected Software

SDT-CS3B1
Vulnerable Versions:
1.2.0

Timeline

Official Publish: March 16th, 2026
Last Modified: April 7th, 2026
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-352

MITRE ATT&CK TTPs

T1566.002 Spearphishing Link
Initial Access
T1204.001 Malicious Link
Execution
T1098 Account Manipulation
Persistence
T1565.001 Stored Data Manipulation
Impact