Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload
Published Mar 16, 2026
9.3
CRITICALCVSS 4.0
EPSS 1.04%
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
-
- Version 1.2.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Telesquare | Sdt-Cs3b1 | n/a |
|
- 1.2.0
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Mar 16, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Mar–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.04% (0.01039) | 62.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.04% (0.01039) | 59.37th | v5 (v2026.06.15) |
| Mar 16, 2026 | 0.26% (0.00262) | 49.26th | v4 (v2025.03.14) |
References (3)
- https://cxsecurity.com/issue/WLB-2017120301 third-party-advisoryExploitIssue Tracking
- https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-webdav-arbitrary-file-upload third-party-advisoryThird Party Advisory
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5446.php third-party-advisoryExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://cxsecurity.com/issue/WLB-2017120301 | third-party-advisoryExploitIssue Tracking | |
| https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-webdav-arbitrary-file-upload | third-party-advisoryThird Party Advisory | |
| https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5446.php | third-party-advisoryExploitThird Party Advisory |
Change history (0)
No recorded changes yet.