CVE-2017-6653

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 7.5Exploit: None knownExposed: 0

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

A vulnerability in the TCP throttling process for the GUI of the Cisco Identity Services Engine (ISE) 2.1(0.474) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device where the ISE GUI may fail to respond to new or established connection requests. The vulnerability is due to insufficient TCP rate limiting protection on the GUI. An attacker could exploit this vulnerability by sending the affected device a high rate of TCP connections to the GUI. An exploit could allow the attacker to cause the GUI to stop responding while the high rate of connections is in progress. Cisco Bug IDs: CSCvc81803.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

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
Severity75% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
80%
KEV
Not listed

Published

May 22, 2017

Last Modified

June 17, 2026

References (6)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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.

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

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Frequently asked(5)

What is CVE-2017-6653?
CVE-2017-6653 is a high vulnerability published on May 22, 2017. A vulnerability in the TCP throttling process for the GUI of the Cisco Identity Services Engine (ISE) 2.1(0.474) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device where the ISE GUI may fail to respond to new or established connection…
When was CVE-2017-6653 disclosed?
CVE-2017-6653 was first published in the National Vulnerability Database on May 22, 2017, 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-2017-6653 actively exploited?
CVE-2017-6653 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 19.9% of all scored CVEs.
What is the CVSS score of CVE-2017-6653?
CVE-2017-6653 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-6653?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6653, 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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