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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 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)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

March 16, 2026

Last Modified

June 17, 2026

Advisory Details (6)

Auto-updated Aug 25, 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

Locked Out | 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 3× in last 7d / 65× 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 183 total refreshes for this CVE.

  1. 2026-08-27 14:21 UTCEPSS rescore
  2. 2026-08-26 14:41 UTCEPSS rescore
  3. 2026-08-25 13:44 UTCEPSS rescore
  4. 2026-08-21 23:44 UTCEPSS rescore
  5. 2026-08-20 22:51 UTCEPSS rescore
  6. 2026-08-19 16:59 UTCEPSS rescore
  7. 2026-08-18 13:43 UTCEPSS rescore
  8. 2026-08-17 13:42 UTCEPSS rescore
  9. 2026-08-16 14:51 UTCEPSS rescore
  10. 2026-08-16 11:32 UTCEG score recompute
  11. 2026-08-16 11:32 UTCGHSA enrichment
  12. 2026-08-16 02:10 UTCEPSS rescore
  13. 2026-08-15 01:26 UTCEPSS rescore
  14. 2026-08-14 23:56 UTCGHSA enrichment
  15. 2026-08-14 20:02 UTCGHSA enrichment
  16. 2026-08-14 15:23 UTCGHSA enrichment
  17. 2026-08-14 11:29 UTCGHSA enrichment
  18. 2026-08-14 07:35 UTCEG score recompute
  19. 2026-08-14 07:35 UTCGHSA enrichment
  20. 2026-08-13 02:25 UTCGHSA enrichment
  21. 2026-08-12 22:31 UTCEG score recompute
  22. 2026-08-12 22:31 UTCGHSA enrichment
  23. 2026-08-12 13:46 UTCEPSS rescore
  24. 2026-08-12 01:32 UTCGHSA enrichment
  25. 2026-08-11 21:38 UTCEG score recompute
Show 75 more
  1. 2026-08-11 21:38 UTCGHSA enrichment
  2. 2026-08-11 08:40 UTCGHSA enrichment
  3. 2026-08-11 04:46 UTCEG score recompute
  4. 2026-08-11 04:46 UTCGHSA enrichment
  5. 2026-08-10 13:02 UTCGHSA enrichment
  6. 2026-08-10 09:08 UTCGHSA enrichment
  7. 2026-08-10 05:15 UTCGHSA enrichment
  8. 2026-08-10 01:10 UTCGHSA enrichment
  9. 2026-08-09 21:13 UTCGHSA enrichment
  10. 2026-08-09 17:20 UTCEG score recompute
  11. 2026-08-09 17:20 UTCGHSA enrichment
  12. 2026-08-09 13:42 UTCEPSS rescore
  13. 2026-08-09 13:25 UTCGHSA enrichment
  14. 2026-08-09 07:12 UTCEG score recompute
  15. 2026-08-09 07:12 UTCGHSA enrichment
  16. 2026-08-08 09:28 UTCGHSA enrichment
  17. 2026-08-08 05:34 UTCGHSA enrichment
  18. 2026-08-08 01:40 UTCGHSA enrichment
  19. 2026-08-07 21:46 UTCGHSA enrichment
  20. 2026-08-07 17:52 UTCEG score recompute
  21. 2026-08-07 17:52 UTCGHSA enrichment
  22. 2026-08-07 16:22 UTCEPSS rescore
  23. 2026-08-06 19:44 UTCEG score recompute
  24. 2026-08-06 19:44 UTCGHSA enrichment
  25. 2026-08-06 13:42 UTCEPSS rescore
  26. 2026-08-06 09:37 UTCGHSA enrichment
  27. 2026-08-06 05:43 UTCGHSA enrichment
  28. 2026-08-06 01:49 UTCEG score recompute
  29. 2026-08-06 01:49 UTCGHSA enrichment
  30. 2026-08-05 19:12 UTCEPSS rescore
  31. 2026-08-04 15:05 UTCEPSS rescore
  32. 2026-08-04 04:58 UTCGHSA enrichment
  33. 2026-08-04 01:04 UTCEG score recompute
  34. 2026-08-04 01:04 UTCGHSA enrichment
  35. 2026-08-03 01:15 UTCGHSA enrichment
  36. 2026-08-02 21:04 UTCGHSA enrichment
  37. 2026-08-02 17:10 UTCEG score recompute
  38. 2026-08-02 17:10 UTCGHSA enrichment
  39. 2026-08-02 02:23 UTCEPSS rescore
  40. 2026-08-01 04:11 UTCEPSS rescore
  41. 2026-07-30 16:24 UTCEPSS rescore
  42. 2026-07-30 01:26 UTCEPSS rescore
  43. 2026-07-28 15:32 UTCEPSS rescore
  44. 2026-07-26 14:51 UTCEPSS rescore
  45. 2026-07-23 14:15 UTCEPSS rescore
  46. 2026-07-23 01:28 UTCEG score recompute
  47. 2026-07-22 22:08 UTCEG score recompute
  48. 2026-07-22 14:04 UTCEPSS rescore
  49. 2026-07-22 14:04 UTCEPSS rescore
  50. 2026-07-21 15:21 UTCEPSS rescore
  51. 2026-07-21 15:21 UTCEPSS rescore
  52. 2026-07-20 17:04 UTCEPSS rescore
  53. 2026-07-19 14:28 UTCEPSS rescore
  54. 2026-07-19 14:28 UTCEPSS rescore
  55. 2026-07-19 02:26 UTCEPSS rescore
  56. 2026-07-19 02:26 UTCEPSS rescore
  57. 2026-07-18 10:00 UTCEPSS rescore
  58. 2026-07-16 16:59 UTCEPSS rescore
  59. 2026-07-16 16:59 UTCEPSS rescore
  60. 2026-07-15 16:54 UTCEPSS rescore
  61. 2026-07-15 01:56 UTCEPSS rescore
  62. 2026-07-15 01:56 UTCEPSS rescore
  63. 2026-07-13 22:26 UTCEPSS rescore
  64. 2026-07-12 05:43 UTCEPSS rescore
  65. 2026-07-11 08:24 UTCEPSS rescore
  66. 2026-07-09 19:06 UTCEPSS rescore
  67. 2026-07-08 15:10 UTCEPSS rescore
  68. 2026-07-07 13:42 UTCEPSS rescore
  69. 2026-07-06 16:24 UTCEPSS rescore
  70. 2026-07-06 16:24 UTCEPSS rescore
  71. 2026-07-06 02:20 UTCEPSS rescore
  72. 2026-07-06 02:20 UTCEPSS rescore
  73. 2026-07-05 02:27 UTCEPSS rescore
  74. 2026-07-04 06:28 UTCEPSS rescore
  75. 2026-07-02 16:54 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 June 17, 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 1% probability of exploitation in the next 30 days, which ranks it in the top 57.8% of all scored CVEs.
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.

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