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CVE-2017-20221

17
FAUCET Score

CVE-2017-20221 identifies a Cross-Site Request Forgery (CSRF) vulnerability in Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0. This flaw, caused by missing request validation, enables authenticated attackers to execute arbitrary system commands with router privileges if a logged-in user visits a specially crafted malicious web page. Rated Medium with a CVSS score of 4.3, the attack has low complexity but can lead to significant integrity compromise through command execution. There is currently no evidence of active exploitation, public exploit code, or notable community discussion surrounding this vulnerability.

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

5.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/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
LOW
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
LOW
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
20.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 27th percentile among its peer group of 21,974 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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-2017120299
Issue Tracking
exchange.xforce.ibmcloud.com / vulnerabilities/136839
Third Party Advisory
packetstormsecurity.com / files/145550
ExploitThird Party Advisory
exploit-db.com / exploits/43400
ExploitVDB Entry
vulncheck.com / advisories/telesquare-skt-lte-router-sdt-cs3b1-csrf-system-command-execution
Third Party Advisory
zeroscience.mk / en/vulnerabilities/ZSL-2017-5443.php
ExploitThird Party Advisory