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CVE-2017-20223

31
FAUCET Score

CVE-2017-20223 details an Insecure Direct Object Reference (IDOR) vulnerability (CWE-639) affecting Telesquare SKT LTE Router SDT-CS3B1 firmware version 1.2.0. This flaw permits attackers to bypass authorization and access sensitive information or functionalities by manipulating input parameters to directly reference system objects. Rated Critical with a CVSS score of 9.8, it is easily exploitable over the network with low complexity, leading to high impacts on confidentiality, integrity, and availability. Despite its severe rating, there is no evidence of active exploitation, public exploit code availability, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.0CPE matchmatch criteria
cpe:2.3:o:telesquare:sdt-cs3b1_firmware:1.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 20th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cxsecurity.com / issue/WLB-2017120297
Issue Tracking
exchange.xforce.ibmcloud.com / vulnerabilities/136993
Third Party Advisory
packetstormsecurity.com / files/145551
Third Party Advisory
exploit-db.com / exploits/43402
Third Party AdvisoryVDB Entry
vulncheck.com / advisories/telesquare-skt-lte-router-sdt-cs3b1-insecure-direct-object-reference
Third Party Advisory
zeroscience.mk / en/vulnerabilities/ZSL-2017-5445.php
Third Party Advisory