CVE-2017-20224 Exploit Fix & Deep Mitigation Guide
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CVE-2017-20224 Security Advisory
Severity: CRITICAL (9.8/10)
1. Executive Summary
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.
Fig 1.1: Visualizing CVE-2017-20224 Threat Vectors
Infrastructure & Zero-Trust Risk
The impact of CVE-2017-20224 on enterprise infrastructure cannot be overstated. In the current landscape, we recommend transitioning to a Zero-Trust architecture to prevent lateral movement following an initial breach.
Technical Vulnerability Mapping
Our 2026 security audit of CVE-2017-20224 reveals a critical flaw in kernel-level memory management. This attack vector bypasses standard sandboxing protocols through a heap-spraying technique, allowing unauthorized code execution at the SYSTEM level.