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Vulnerability record · CVE-2017-20221 · published 16 March 2026

CVE-2017-20221: Telesquare sdt-cs3b1 firmware cross-site request forgery vulnerability

Telesquare · Sdt Cs3b1 Firmware

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.

5.3 CVSS 4.0 Medium EPSS 0.29% · top 81.1% CWE-352 · Cross-site request forgery
5.3CVSS 4.0 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 3 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cxsecurity.com/issue/WLB-2017120299 Issue Tracking
https://exchange.xforce.ibmcloud.com/vulnerabilities/136839 Third Party Advisory
https://packetstormsecurity.com/files/145550 ExploitThird Party Advisory
https://www.exploit-db.com/exploits/43400/ ExploitVDB Entry
https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-csrf-system-command-execution Third Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5443.php ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-46422Telesquare SDT-CW3B1 router OS command injectionTelesquare SDT-CW3B1 1.1.0 contains an OS command injection flaw (CWE-78) that lets a remote attacker run arbitrary operating system commands. The vu…EPSS 94%analysed9.8CVE-2018-12526Telesquare sdt-cs3b1 firmware hard-coded credentials vulnerabilityTelesquare SDT-CS3B1 and SDT-CW3B1 devices through 1.2.0 have a default factory account. Remote attackers can obtain access to the device via TELNET …EPSS 2.3%9.3CVE-2017-20223Telesquare sdt-cs3b1 firmware insecure direct object reference vulnerabilityTelesquare SKT LTE Router SDT-CS3B1 firmware version 1.2.0 contains an insecure direct object reference vulnerability that allows attackers to bypass…EPSS 0.52%9.3CVE-2017-20224Telesquare sdt-cs3b1 firmware unrestricted file upload vulnerabilityTelesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload mal…EPSS 1.0%8.7CVE-2017-20222Telesquare sdt-cs3b1 firmware missing authentication for critical function vulnerabilityTelesquare SKT LTE Router SDT-CS3B1 software version 1.2.0 contains an unauthenticated remote reboot vulnerability that allows attackers to trigger d…EPSS 0.71%9.4CVE-2025-62593Ray browser-based RCE via insufficient User-Agent guardRay, an AI compute engine, contains a critical remote code execution flaw before version 2.52.0. Its defense against browser-based attacks relies on …KEVEPSS 62%analysed8.1CVE-2008-4128Cisco IOS HTTP Administration CSRF allows arbitrary command executionThe HTTP Administration component in Cisco IOS 12.4 on the 871 Integrated Services Router is vulnerable to multiple cross-site request forgery flaws.…KEVEPSS 34%analysed8.8CVE-2023-2533PaperCut NG/MF CSRF allows admin security setting changes and code executionPaperCut NG and MF contain a cross-site request forgery flaw that, under specific conditions, lets an attacker change security settings or execute ar…KEVEPSS 29%analysed

Source: NIST National Vulnerability Database (record CVE-2017-20221), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.