CVE-2017-20223

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-03-16. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Telesquare SKT LTE Router SDT-CS3B1 firmware version 1.2.0 contains an insecure direct object reference vulnerability that allows attackers to bypass authorization and access resources by manipulating user-supplied input parameters. Attackers can directly reference objects in the system to retrieve sensitive information and access functionalities without proper access controls.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
40.9%
KEV
Not listed

Published

March 16, 2026

Last Modified

April 14, 2026

Advisory Details (6)

Auto-updated May 18, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

Zero Science Lab — Information Security Research & Development Laboratory

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5445.php
generic

Telesquare SKT LTE Router SDT-CS3B1 Insecure Direct Object Reference | Advisories | VulnCheck

https://www.vulncheck.com/advisories/telesquare-skt-lte-router-sdt-cs3b1-insecure-direct-object-reference
generic🟡 PoC Available

Telesquare SKT LTE Router SDT-CS3B1 - Information Disclosure - Hardware webapps Exploit

https://www.exploit-db.com/exploits/43402/
generic

Packet Storm

https://packetstormsecurity.com/files/145551
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/136993
generic

Telesquare SKT LTE Router SDT-CS3B1 Information Disclosure - CXSecurity.com

https://cxsecurity.com/issue/WLB-2017120297

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 40× 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 112 total refreshes for this CVE.

  1. 2026-07-15 16:54 UTCEPSS rescore
  2. 2026-07-15 01:56 UTCEPSS rescore
  3. 2026-07-15 01:56 UTCEPSS rescore
  4. 2026-07-13 22:26 UTCEPSS rescore
  5. 2026-07-12 05:43 UTCEPSS rescore
  6. 2026-07-11 08:24 UTCEPSS rescore
  7. 2026-07-09 19:06 UTCEPSS rescore
  8. 2026-07-08 15:10 UTCEPSS rescore
  9. 2026-07-07 13:42 UTCEPSS rescore
  10. 2026-07-06 16:24 UTCEPSS rescore
  11. 2026-07-06 16:24 UTCEPSS rescore
  12. 2026-07-06 02:20 UTCEPSS rescore
  13. 2026-07-06 02:20 UTCEPSS rescore
  14. 2026-07-05 02:27 UTCEPSS rescore
  15. 2026-07-04 06:28 UTCEPSS rescore
  16. 2026-07-02 16:54 UTCEPSS rescore
  17. 2026-07-01 15:02 UTCEPSS rescore
  18. 2026-06-30 23:19 UTCEPSS rescore
  19. 2026-06-30 23:19 UTCEPSS rescore
  20. 2026-06-29 14:03 UTCEPSS rescore
  21. 2026-06-28 14:04 UTCEPSS rescore
  22. 2026-06-28 04:53 UTCEPSS rescore
  23. 2026-06-27 03:06 UTCEPSS rescore
  24. 2026-06-27 03:05 UTCEPSS rescore
  25. 2026-06-25 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-06-24 14:02 UTCEPSS rescore
  2. 2026-06-24 14:02 UTCEPSS rescore
  3. 2026-06-23 21:30 UTCEPSS rescore
  4. 2026-06-22 14:23 UTCEPSS rescore
  5. 2026-06-22 14:23 UTCEPSS rescore
  6. 2026-06-21 14:54 UTCEPSS rescore
  7. 2026-06-21 14:54 UTCEPSS rescore
  8. 2026-06-21 01:57 UTCEPSS rescore
  9. 2026-06-21 01:57 UTCEPSS rescore
  10. 2026-06-19 19:23 UTCEPSS rescore
  11. 2026-06-19 19:23 UTCEPSS rescore
  12. 2026-06-18 17:50 UTCEPSS rescore
  13. 2026-06-17 17:50 UTCEPSS rescore
  14. 2026-06-16 17:50 UTCEPSS rescore
  15. 2026-06-16 17:50 UTCEPSS rescore
  16. 2026-06-15 17:45 UTCEPSS rescore
  17. 2026-06-14 23:14 UTCEPSS rescore
  18. 2026-06-13 22:57 UTCEPSS rescore
  19. 2026-06-12 23:09 UTCEPSS rescore
  20. 2026-06-12 03:55 UTCEG score recompute
  21. 2026-06-12 03:55 UTCGHSA enrichment
  22. 2026-06-12 00:01 UTCEG score recompute
  23. 2026-06-12 00:01 UTCGHSA enrichment
  24. 2026-06-10 22:15 UTCEPSS rescore
  25. 2026-06-10 19:47 UTCEG score recompute
  26. 2026-06-10 19:47 UTCGHSA enrichment
  27. 2026-06-10 15:53 UTCEG score recompute
  28. 2026-06-10 15:53 UTCGHSA enrichment
  29. 2026-06-10 13:19 UTCEPSS rescore
  30. 2026-06-10 09:50 UTCEG score recompute
  31. 2026-06-10 09:50 UTCGHSA enrichment
  32. 2026-06-10 05:56 UTCEG score recompute
  33. 2026-06-10 05:56 UTCGHSA enrichment
  34. 2026-06-10 01:53 UTCEG score recompute
  35. 2026-06-10 01:53 UTCGHSA enrichment
  36. 2026-06-09 16:45 UTCEG score recompute
  37. 2026-06-09 16:45 UTCGHSA enrichment
  38. 2026-06-08 14:14 UTCEPSS rescore
  39. 2026-06-08 14:14 UTCEPSS rescore
  40. 2026-06-08 06:53 UTCEG score recompute
  41. 2026-06-08 06:53 UTCGHSA enrichment
  42. 2026-06-08 02:59 UTCEG score recompute
  43. 2026-06-08 02:59 UTCGHSA enrichment
  44. 2026-06-07 23:04 UTCEG score recompute
  45. 2026-06-07 23:04 UTCGHSA enrichment
  46. 2026-06-07 19:07 UTCEG score recompute
  47. 2026-06-07 19:07 UTCGHSA enrichment
  48. 2026-06-07 15:22 UTCEPSS rescore
  49. 2026-06-07 15:22 UTCEPSS rescore
  50. 2026-06-07 14:39 UTCEG score recompute
  51. 2026-06-07 14:39 UTCGHSA enrichment
  52. 2026-06-06 13:45 UTCEPSS rescore
  53. 2026-06-06 13:45 UTCEPSS rescore
  54. 2026-06-05 22:44 UTCEPSS rescore
  55. 2026-06-05 06:08 UTCEPSS rescore
  56. 2026-06-05 06:08 UTCEPSS rescore
  57. 2026-06-04 13:10 UTCEPSS rescore
  58. 2026-06-02 20:11 UTCEPSS rescore
  59. 2026-06-02 20:11 UTCEPSS rescore
  60. 2026-06-01 13:49 UTCEPSS rescore
  61. 2026-05-31 22:28 UTCEPSS rescore
  62. 2026-05-31 22:28 UTCEPSS rescore
  63. 2026-05-31 00:14 UTCEPSS rescore
  64. 2026-05-31 00:14 UTCEPSS rescore
  65. 2026-05-29 13:41 UTCEPSS rescore
  66. 2026-05-28 13:42 UTCEPSS rescore
  67. 2026-05-28 13:42 UTCEPSS rescore
  68. 2026-05-27 13:38 UTCEPSS rescore
  69. 2026-05-27 13:38 UTCEPSS rescore
  70. 2026-05-26 13:42 UTCEPSS rescore
  71. 2026-05-26 13:42 UTCEPSS rescore
  72. 2026-05-26 07:17 UTCEPSS rescore
  73. 2026-05-26 07:17 UTCEPSS rescore
  74. 2026-05-22 21:15 UTCEPSS rescore
  75. 2026-05-22 21:15 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-20223?
CVE-2017-20223 is a critical vulnerability published on March 16, 2026. Telesquare SKT LTE Router SDT-CS3B1 firmware version 1.2.0 contains an insecure direct object reference vulnerability that allows attackers to bypass authorization and access resources by manipulating user-supplied input parameters. Attackers can directly reference objects in the system to retrieve…
When was CVE-2017-20223 disclosed?
CVE-2017-20223 was first published in the National Vulnerability Database on March 16, 2026, with the most recent update on April 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-20223 actively exploited?
CVE-2017-20223 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-20223?
CVE-2017-20223 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-20223?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-20223, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2017-20223

Explore →

Is Your Infrastructure Affected by CVE-2017-20223?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs