CVE-2017-6711

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.1EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.6%CVSS: 9.1Exploit: None knownExposed services: Not assessed

No fix has been recorded since the CVE record was published in 2017 — isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

A vulnerability in the Ultra Automation Service (UAS) of the Cisco Ultra Services Framework could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted device. The vulnerability is due to an insecure default configuration of the Apache ZooKeeper service used by the affected software. An attacker could exploit this vulnerability by accessing the affected device through the orchestrator network. An exploit could allow the attacker to gain access to ZooKeeper data nodes (znodes) and influence the behavior of the system's high-availability feature. This vulnerability affects all releases of Cisco Ultra Services Framework UAS prior to Releases 5.0.3 and 5.1. Cisco Bug IDs: CSCvd29395.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
46
EG Risk 46/100

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 (value × EchelonGraph’s weight)
Severity91% × 45%
The EG Score, 9.1 of 10.
Exploitation2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability30% × 15%
EchelonGraph's default before algorithm v3.4: CISA had not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix has been recorded since the CVE record was published in 2017. Isolate the affected system within your standard update timelines at low or medium mission impact and sooner than that at high (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.
EPSS PROB
1.6%
EPSS %ILE
74th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).

No fix has been recorded since the CVE record was published in 2017. Isolate the affected system within your standard update timelines at low or medium mission impact and sooner than that at high (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

July 6, 2017

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
No fix on record since 2017.
generic

Cisco Ultra Services Framework UAS Unauthenticated Access Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170705-uas
generic

SecurityFocus

http://www.securityfocus.com/bid/99440

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 23× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 82 of 145 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 18 repeat rows among the latest 100 are merged into the row they repeat. The 63 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 13:41 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  2. 2026-10-10 19:55 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  3. 2026-10-09 20:02 UTCEPSS rescoreEPSS 1.6% · 74th percentile
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  5. 2026-10-07 23:41 UTCEPSS rescoreEPSS 1.6% · 74th percentile
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  8. 2026-10-03 14:21 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  9. 2026-09-30 14:59 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  10. 2026-09-30 09:37 UTCEG score recompute
  11. 2026-09-28 13:45 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  12. 2026-09-27 13:40 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  13. 2026-09-26 15:53 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  14. 2026-09-26 00:19 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  15. 2026-09-24 13:59 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  16. 2026-09-23 13:42 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  17. 2026-09-21 20:27 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  18. 2026-09-20 20:09 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  19. 2026-09-19 15:36 UTCEPSS rescoreEPSS 1.6% · 74th percentile
  20. 2026-09-17 19:22 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  21. 2026-09-15 03:05 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  22. 2026-09-13 16:42 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  23. 2026-09-12 14:56 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  24. 2026-09-11 09:31 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  25. 2026-09-07 15:56 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
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  1. 2026-09-05 15:24 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  2. 2026-09-04 13:56 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  3. 2026-09-04 05:02 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
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  5. 2026-09-01 03:31 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  6. 2026-08-30 19:13 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  7. 2026-08-28 21:36 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  8. 2026-08-27 14:21 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  9. 2026-08-26 14:41 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  10. 2026-08-25 13:44 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  11. 2026-08-23 00:14 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  12. 2026-08-21 23:44 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  13. 2026-08-19 16:59 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  14. 2026-08-18 13:43 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  15. 2026-08-16 14:51 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  16. 2026-08-16 02:10 UTCEPSS rescoreEPSS 1.6% · 73rd percentile
  17. 2026-08-15 01:26 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  18. 2026-08-12 13:46 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  19. 2026-08-09 13:42 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  20. 2026-08-08 16:32 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  21. 2026-08-07 16:22 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  22. 2026-08-06 13:42 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  23. 2026-08-05 19:13 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  24. 2026-08-02 02:23 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  25. 2026-08-01 04:12 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  26. 2026-07-30 16:24 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  27. 2026-07-30 01:26 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  28. 2026-07-28 15:32 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  29. 2026-07-26 14:51 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  30. 2026-07-23 14:15 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  31. 2026-07-23 01:30 UTCEG score recompute
  32. 2026-07-22 22:09 UTCEG score recompute
  33. 2026-07-22 14:04 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  34. 2026-07-21 15:21 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  35. 2026-07-20 17:04 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  36. 2026-07-19 14:28 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  37. 2026-07-19 02:26 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  38. 2026-07-18 10:01 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  39. 2026-07-16 16:59 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  40. 2026-07-15 16:54 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
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  42. 2026-07-13 22:26 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  43. 2026-07-12 05:43 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  44. 2026-07-11 08:24 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
  45. 2026-07-09 19:06 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
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  54. 2026-06-30 23:19 UTCEPSS rescoreEPSS 1.6% · 72nd percentile
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  57. 2026-06-28 04:53 UTCEPSS rescoreEPSS 1.6% · 72nd percentile

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Frequently asked(5)

What is CVE-2017-6711?
CVE-2017-6711 is a critical-severity vulnerability; its CVE record was published on July 6, 2017. A vulnerability in the Ultra Automation Service (UAS) of the Cisco Ultra Services Framework could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted device. The vulnerability is due to an insecure default configuration of the Apache ZooKeeper service used by the…
When was CVE-2017-6711 made public?
CVE-2017-6711 was made public on July 5, 2017: that is the date its CVE record's CNA, Cisco Systems, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 6, 2017. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2017-6711 actively exploited?
CVE-2017-6711 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.6% probability of exploitation in the next 30 days (74th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-6711?
CVE-2017-6711 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2017-6711?
No fix for CVE-2017-6711 has been recorded since its CVE record was published in 2017, and EchelonGraph holds no vendor advisory for it. Isolate the affected system (restrict network access to it, for example with a firewall, or keep it off the internet) or retire the product.

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