CVE-2018-16591

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

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

FURUNO FELCOM 250 and 500 devices allow unauthenticated users to change the password for the Admin, Log and Service accounts, as well as the password for the protected "SMS" panel via /cgi-bin/sm_changepassword.cgi and /cgi-bin/sm_sms_changepasswd.cgi.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
80.2%
KEV
Not listed

Published

September 10, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 28, 2026
No patch confirmed yet.
generic

CVE-2018-16591 - The Furuno Felcom250 and Felcom500 devices allowed unauthenticated users to change the password for the Admin, Log and Service accounts, as well as the password for the protected "SIM" panel. · GitHub

https://gist.github.com/CyberSKR/2c30d964d48b5e1518ded88bd953b710
generic

Accredited Online HR Certification Programs & Courses - HRAcademia

https://cyberskr.com/blog/furuno-felcom.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 42× 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. 2026-07-15 16:55 UTCEPSS rescore
  2. 2026-07-15 01:56 UTCEPSS rescore
  3. 2026-07-13 22:26 UTCEPSS rescore
  4. 2026-07-13 06:10 UTCEPSS rescore
  5. 2026-07-12 05:43 UTCEPSS rescore
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  7. 2026-07-09 19:06 UTCEPSS rescore
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  16. 2026-07-02 16:54 UTCEPSS rescore
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  19. 2026-06-30 23:19 UTCEPSS rescore
  20. 2026-06-30 23:19 UTCEPSS rescore
  21. 2026-06-29 14:03 UTCEPSS rescore
  22. 2026-06-28 14:04 UTCEPSS rescore
  23. 2026-06-28 04:53 UTCEPSS rescore
  24. 2026-06-28 04:53 UTCEPSS rescore
  25. 2026-06-27 03:06 UTCEPSS rescore
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  1. 2026-06-25 13:47 UTCEPSS rescore
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  3. 2026-06-24 14:02 UTCEPSS rescore
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  5. 2026-06-23 21:30 UTCEPSS rescore
  6. 2026-06-22 14:23 UTCEPSS rescore
  7. 2026-06-21 14:54 UTCEPSS rescore
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  9. 2026-06-21 01:57 UTCEPSS rescore
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  11. 2026-06-19 19:23 UTCEPSS rescore
  12. 2026-06-18 17:50 UTCEPSS rescore
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  17. 2026-06-16 17:50 UTCEPSS rescore
  18. 2026-06-15 17:45 UTCEPSS rescore
  19. 2026-06-14 23:14 UTCEPSS rescore
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  21. 2026-06-13 22:58 UTCEPSS rescore
  22. 2026-06-13 22:58 UTCEPSS rescore
  23. 2026-06-12 23:09 UTCEPSS rescore
  24. 2026-06-11 13:57 UTCEPSS rescore
  25. 2026-06-10 22:16 UTCEPSS rescore
  26. 2026-06-10 13:19 UTCEPSS rescore
  27. 2026-06-07 15:22 UTCEPSS rescore
  28. 2026-06-07 15:22 UTCEPSS rescore
  29. 2026-06-06 13:45 UTCEPSS rescore
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  37. 2026-06-02 20:11 UTCEPSS rescore
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  39. 2026-06-01 13:49 UTCEPSS rescore
  40. 2026-05-31 22:29 UTCEPSS rescore
  41. 2026-05-31 22:28 UTCEPSS rescore
  42. 2026-05-31 00:14 UTCEPSS rescore
  43. 2026-05-31 00:14 UTCEPSS rescore
  44. 2026-05-29 13:41 UTCEPSS rescore
  45. 2026-05-28 13:42 UTCEPSS rescore
  46. 2026-05-28 13:42 UTCEPSS rescore
  47. 2026-05-28 03:20 UTCEG score recompute
  48. 2026-05-28 03:20 UTCGHSA enrichment
  49. 2026-05-27 13:38 UTCEPSS rescore
  50. 2026-05-27 13:38 UTCEPSS rescore
  51. 2026-05-26 13:42 UTCEPSS rescore
  52. 2026-05-26 13:42 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-16591?
CVE-2018-16591 is a critical vulnerability published on September 10, 2018. FURUNO FELCOM 250 and 500 devices allow unauthenticated users to change the password for the Admin, Log and Service accounts, as well as the password for the protected "SMS" panel via /cgi-bin/smchangepassword.cgi and /cgi-bin/smsms_changepasswd.cgi.
When was CVE-2018-16591 disclosed?
CVE-2018-16591 was first published in the National Vulnerability Database on September 10, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-16591 actively exploited?
CVE-2018-16591 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-16591?
CVE-2018-16591 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-16591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-16591, 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.

Dependency Blast Radius

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