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Fencer Intel
high 8.6

CVE-2018-13990 json

The WebUI of PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, 48xx versions prior to 1.35 is vulnerable to brute-force attacks, because of Improper Re…

published 7y ago modified 4mo ago also EUVD-2018-5922

cvss
8.6
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

The WebUI of PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, 48xx versions prior to 1.35 is vulnerable to brute-force attacks, because of Improper Restriction of Excessive Authentication Attempts.

Patch / fix

  • phoenixcontact fl_switch_3005_firmware 1.35
  • phoenixcontact fl_switch_3005t_firmware 1.35
  • phoenixcontact fl_switch_3004t-fx_firmware 1.35
  • phoenixcontact fl_switch_3004t-fx_st_firmware 1.35
  • phoenixcontact fl_switch_3008_firmware 1.35
  • phoenixcontact fl_switch_3008t_firmware 1.35
  • phoenixcontact fl_switch_3006t-2fx_firmware 1.35
  • phoenixcontact fl_switch_3006t-2fx_st_firmware 1.35
  • phoenixcontact fl_switch_3012e-2sfx_firmware 1.35
  • phoenixcontact fl_switch_3016e_firmware 1.35
  • phoenixcontact fl_switch_3016_firmware 1.35
  • phoenixcontact fl_switch_3016t_firmware 1.35
  • phoenixcontact fl_switch_3006t-2fx_sm_firmware 1.35
  • phoenixcontact fl_switch_4008t-2sfp_firmware 1.35
  • phoenixcontact fl_switch_4008t-2gt-4fx_sm_firmware 1.35
  • phoenixcontact fl_switch_4008t-2gt-3fx_sm_firmware 1.35
  • phoenixcontact fl_switch_4808e-16fx_lc-4gc_firmware 1.35
  • phoenixcontact fl_switch_4808e-16fx_sm-4gc_firmware 1.35
  • phoenixcontact fl_switch_4808e-16fx_sm_st-4gc_firmware 1.35
  • phoenixcontact fl_switch_4808e-16fx_st-4gc_firmware 1.35

Is CVE-2018-13990 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-19-024-02 updated cvss 8.6

PHOENIX CONTACT FL SWITCH

  • PHOENIX CONTACT, Innominate Security Technologies FL SWITCH 3xxx 4xxx and 48xx < 1.35
    affected: mitigation “Phoenix Contact also recommends that users using the Phoenix Contact managed FL SWITCH devices enable HTTP security.” cert.vde.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

2.31% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 8.6 CVSS:3.0/AC:L/AV:N/A:L/C:H/I:L/PR:N/S:U/UI:N
CNA 3.0 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.