CVE-2017-20224

CRITICAL 9.8

Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434
Vendor	telesquare
Product	sdt-cs3b1
Published	Mar 16, 2026
Last Updated	Mar 16, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Telesquare / SDT-CS3B1

1.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab