CVE-2017-3204

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 3.2%, top 13% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 8.1Exploit: NoneExposed: 0

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

The Go SSH library (x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity81% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
86.6%
KEV
Not listed

Published

April 4, 2017

Last Modified

May 13, 2026

References (10)

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
golang.org/x/crypto—0.0.0-20170330155735-e4e2799dd7aa—

Data Freshness Timeline

(refreshed 14× in last 7d / 41× 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. 2026-07-23 01:29 UTCEG score recompute
  2. 2026-07-22 22:08 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-22 14:04 UTCEPSS rescore
  5. 2026-07-21 15:21 UTCEPSS rescore
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  7. 2026-07-20 17:04 UTCEPSS rescore
  8. 2026-07-19 14:28 UTCEPSS rescore
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  18. 2026-07-13 22:26 UTCEPSS rescore
  19. 2026-07-12 05:43 UTCEPSS rescore
  20. 2026-07-12 01:11 UTCOSV refresh
  21. 2026-07-11 08:24 UTCEPSS rescore
  22. 2026-07-09 19:06 UTCEPSS rescore
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  24. 2026-07-07 13:42 UTCEPSS rescore
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  1. 2026-07-06 16:24 UTCEPSS rescore
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  5. 2026-07-04 06:28 UTCEPSS rescore
  6. 2026-07-02 16:54 UTCEPSS rescore
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  8. 2026-06-30 23:19 UTCEPSS rescore
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  14. 2026-06-24 14:02 UTCEPSS rescore
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  16. 2026-06-23 07:30 UTCOSV refresh
  17. 2026-06-22 14:23 UTCEPSS rescore
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  19. 2026-06-21 01:57 UTCEPSS rescore
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  23. 2026-06-18 17:50 UTCEPSS rescore
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  27. 2026-06-15 17:45 UTCEPSS rescore
  28. 2026-06-14 23:14 UTCEPSS rescore
  29. 2026-06-13 22:57 UTCEPSS rescore
  30. 2026-06-12 23:09 UTCEPSS rescore
  31. 2026-06-10 22:15 UTCEPSS rescore
  32. 2026-06-10 13:19 UTCEPSS rescore
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  35. 2026-06-07 15:22 UTCEPSS rescore
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  37. 2026-06-06 13:45 UTCEPSS rescore
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  39. 2026-06-06 06:30 UTCOSV refresh
  40. 2026-06-05 22:44 UTCEPSS rescore
  41. 2026-06-05 06:08 UTCEPSS rescore
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  43. 2026-06-04 13:10 UTCEPSS rescore
  44. 2026-06-02 20:11 UTCEPSS rescore
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  46. 2026-05-31 22:28 UTCEPSS rescore
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  48. 2026-05-31 00:14 UTCEPSS rescore
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  50. 2026-05-29 13:41 UTCEPSS rescore
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  53. 2026-05-27 13:38 UTCEPSS rescore
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  59. 2026-05-22 21:15 UTCEPSS rescore
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  63. 2026-05-22 21:15 UTCEPSS rescore
  64. 2026-05-22 14:40 UTCEG score recompute
  65. 2026-05-21 22:40 UTCEPSS rescore
  66. 2026-05-20 22:37 UTCEPSS rescore
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  71. 2026-05-18 21:30 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-3204?
CVE-2017-3204 is a high vulnerability published on April 4, 2017. The Go SSH library (x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.
When was CVE-2017-3204 disclosed?
CVE-2017-3204 was first published in the National Vulnerability Database on April 4, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-3204 actively exploited?
CVE-2017-3204 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-3204?
CVE-2017-3204 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2017-3204?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-3204, 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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