CVE-2017-16806

HIGHNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 86% probability of exploitation within the next 30 days (top 0.6% of all CVEs). NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Weaponized
7.5
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 91%
CISA-KEV: Not listedEPSS: 91%CVSS: 7.5Exploit: NoneExposed: 0

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

The Process function in RemoteTaskServer/WebServer/HttpServer.cs in Ulterius before 1.9.5.0 allows HTTP server directory traversal.

CVSS v3
7.5
EG Score
9.0(high)
EPSS
99.8%
KEV
Not listed

Published

November 13, 2017

Last Modified

May 13, 2026

References (4)

Data Freshness Timeline

(refreshed 3× in last 7d / 13× 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. 2026-07-04 06:28 UTCEPSS rescore
  2. 2026-06-30 23:19 UTCEPSS rescore
  3. 2026-06-30 23:19 UTCEPSS rescore
  4. 2026-06-29 14:03 UTCEPSS rescore
  5. 2026-06-28 04:53 UTCEPSS rescore
  6. 2026-06-23 21:30 UTCEPSS rescore
  7. 2026-06-22 21:35 UTCOSV refresh
  8. 2026-06-16 17:50 UTCEPSS rescore
  9. 2026-06-15 17:45 UTCEPSS rescore
  10. 2026-06-13 22:57 UTCEPSS rescore
  11. 2026-06-12 23:09 UTCEPSS rescore
  12. 2026-06-11 13:57 UTCEPSS rescore
  13. 2026-06-10 22:15 UTCEPSS rescore
  14. 2026-06-05 22:44 UTCEPSS rescore
  15. 2026-06-05 13:27 UTCOSV refresh
  16. 2026-06-04 13:10 UTCEPSS rescore
  17. 2026-06-04 13:10 UTCEPSS rescore
  18. 2026-06-01 13:49 UTCEPSS rescore
  19. 2026-06-01 13:49 UTCEPSS rescore
  20. 2026-05-31 22:28 UTCEPSS rescore
  21. 2026-05-31 00:14 UTCEPSS rescore
  22. 2026-05-29 13:41 UTCEPSS rescore
  23. 2026-05-28 13:42 UTCEPSS rescore
  24. 2026-05-28 13:42 UTCEPSS rescore
  25. 2026-05-27 13:38 UTCEPSS rescore
Show 8 more
  1. 2026-05-27 13:38 UTCEPSS rescore
  2. 2026-05-22 08:07 UTCEG score recompute
  3. 2026-05-22 08:07 UTCGHSA enrichment
  4. 2026-05-21 02:06 UTCOSV refresh
  5. 2026-05-20 22:37 UTCEPSS rescore
  6. 2026-05-20 22:37 UTCEPSS rescore
  7. 2026-05-18 21:30 UTCEPSS rescore
  8. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-43141
    First seen Nov 13, 2017

    Ulterius Server < 1.9.5.0 - Directory Traversal

    Open source ↗
  • Metasploitauxiliary/admin/http/ulterius_file_download✓ verified
    First seen Jan 1, 2017

    Ulterius Server File Download Vulnerability

    Open source ↗
  • Nucleihttp/cves/2017/CVE-2017-16806.yaml
    First seen Jan 1, 2017

    Ulterius Server < 1.9.5.0 - Directory Traversal

    Open source ↗

Frequently asked(5)

What is CVE-2017-16806?
CVE-2017-16806 is a high vulnerability published on November 13, 2017. The Process function in RemoteTaskServer/WebServer/HttpServer.cs in Ulterius before 1.9.5.0 allows HTTP server directory traversal.
When was CVE-2017-16806 disclosed?
CVE-2017-16806 was first published in the National Vulnerability Database on November 13, 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-2017-16806 actively exploited?
CVE-2017-16806 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-16806?
CVE-2017-16806 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2017-16806?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-16806, 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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