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.
CVE-2017-20224
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-16. NVD baseline CVSS 9.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- —
- EPSS
- 60.4%
- KEV
- Not listed
Published
March 16, 2026
Last Modified
April 14, 2026
Advisory Details (3)
Auto-updated May 20, 2026Zero Science Lab — Information Security Research & Development Laboratory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5446.phpTelesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload | Advisories | VulnCheck
https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-webdav-arbitrary-file-uploadTelesquare SKT LTE Router SDT-CS3B1 WebDAV HTTP Methods Arbitrary File Events - CXSecurity.com
https://cxsecurity.com/issue/WLB-2017120301Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 108 total refreshes for this CVE.
- 2026-07-22 22:08 UTCEG score recompute
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Same CWE
10 shownCWE-434
Frequently asked(5)
What is CVE-2017-20224?
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Dependency Blast Radius
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