What’s Vulnerable › Vulnerabilities

CVE-2017-20224: Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-16 · updated 2026-06-17
• Weakness: CWE-434

Description

Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious content by exploiting enabled WebDAV HTTP methods. Attackers can use PUT, DELETE, MKCOL, MOVE, COPY, and PROPPATCH methods to upload executable code, delete files, or manipulate server content for remote code execution or denial of service.

Affected products

• Telesquare SDT-CS3B1: 1.2.0

References

• https://cxsecurity.com/issue/WLB-2017120301
• https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-webdav-arbitrary-file-upload
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5446.php

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