CVE-2018-13992

mediumpriority · track · 39OT risk · elevatedEPSS 0.011 · 66 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.11% (66th) EPSS

CVSS 5 · medium

Is it mine?

129 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-22

The WebUI of PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, 48xx versions 1.0 to 1.34 allows for plaintext transmission (HTTP) of user credentials by default.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedphoenix_contact_psirt
## Remediation for CWE-319 (CVE-2018-13992) Customers using Phoenix Contact managed FL SWITCH devices are recommended to enable HTTP security. ## Remediation for Multiple CWEs: (CWE-352 (CVE-2018-13993), CWE-307 (CVE-2018-13990), CWE-400 (CVE-2018-13994), CWE-922 (CVE-2018-13991), CWE-119 (CVE-2017-3735)) Customers using Phoenix Contact managed FL SWITCH devices with affected firmware versions are recommended to update the firmware to version **1.35 or higher**, which fixes these vulnerabilities. The updated firmware may be downloaded from the managed switch product page on the Phoenix Contact website: | Article No. | Model | Updated Firmware | |-------------|--------------------------------|------------------| | 2891033 | FL SWITCH 3004T-FX | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3004t-fx-2891033?type=firmware_update) | | 2891034 | FL SWITCH 3004T-FX ST | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3004t-fx-st-2891034?type=firmware_update) | | 2891030 | FL SWITCH 3005 | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3005-2891030?type=firmware_update) | | 2891032 | FL SWITCH 3005T | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3005t-2891032?type=firmware_update) | | 2891036 | FL SWITCH 3006T-2FX | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3006t-2fx-2891036?type=firmware_update) | | 2891060 | FL SWITCH 3006T-2FX SM | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3006t-2fx-sm-2891060?type=firmware_update) | | 2891037 | FL SWITCH 3006T-2FX ST | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3006t-2fx-st-2891037?type=firmware_update) | | 2891031 | FL SWITCH 3008 | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3008-2891031?type=firmware_update) | | 2891035 | FL SWITCH 3008T | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3008t-2891035?type=firmware_update) | | 2891120 | FL SWITCH 3012E-2FX | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3012e-2fx-2891120?type=firmware_update) | | 2891119 | FL SWITCH 3012E-2FX SM | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3012e-2fx-sm-2891119?type=firmware_update) | | 2891067 | FL SWITCH 3012E-2SFX | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3012e-2sfx-2891067?type=firmware_update) | | 2891058 | FL SWITCH 3016 | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3016-2891058?type=firmware_update) | | 2891066 | FL SWITCH 3016E | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3016e-2891066?type=firmware_update) | | 2891059 | FL SWITCH 3016T | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-3016t-2891059?type=firmware_update) | | 1026924 | FL SWITCH 4000T-4POE-1SFP | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4000t-4poe-1sfp-1026924?type=firmware_update) | | 1026923 | FL SWITCH 4000T-8POE-2SFP | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4000t-8poe-2sfp-1026923?type=firmware_update) | | 1026922 | FL SWITCH 4004T-8POE-4SFP | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4004t-8poe-4sfp-1026922?type=firmware_update) | | 2891160 | FL SWITCH 4008T-2GT-3FX SM | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4008t-2gt-3fx-sm-2891160?type=firmware_update) | | 2891061 | FL SWITCH 4008T-2GT-4FX SM | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4008t-2gt-4fx-sm-2891061?type=firmware_update) | | 2891062 | FL SWITCH 4008T-2SFP | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4008t-2sfp-2891062?type=firmware_update) | | 2891063 | FL SWITCH 4012T-2GT-2FX | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4012t-2gt-2fx-2891063?type=firmware_update) | | 2891161 | FL SWITCH 4012T-2GT-2FX ST | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4012t-2gt-2fx-st-2891161?type=firmware_update) | | 2891104 | FL SWITCH 4800E-24FX SM-4GC | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4800e-24fx-sm-4gc-2891104?type=firmware_update) | | 2891102 | FL SWITCH 4800E-24FX-4GC | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4800e-24fx-4gc-2891102?type=firmware_update) | | 2891073 | FL SWITCH 4808E-16FX LC-4GC | [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4808e-16fx-lc-4gc-2891073?type=firmware_update) | | 2891074 | FL SWITCH 4808E-16FX SM LC-4GC| [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4808e-16fx-sm-lc-4gc-2891074?type=firmware_update) | | 2891086 | FL SWITCH 4808E-16FX SM ST-4GC| [Download](https://www.phoenixcontact.com/de-de/produkte/switch-fl-switch-4808e-16fx-sm-st-4gc-2891086?type=firmware_update) |
MitigationFL SWITCH 3xxx 4xxx and 48xxcisa_csaf_ot
Phoenix Contact also recommends that users using the Phoenix Contact managed FL SWITCH devices enable HTTP security.

02

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–9.8

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.08.2highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Nsecondary · CISA US

v3.08.2highCVSS:3.0/AC:L/AV:N/A:N/C:H/I:L/PR:N/S:U/UI:Nsecondary · ENISA EU

v3.08.2highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Nsecondary · cve@mitre.org USexploitability 3.9 · impact 4.2

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Phoenix Contact PSIRT DE

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-311USprimaryCWE-311USCWE-319US

04

affected products (129)

Products and version ranges known to be affected.

FL SWITCH 3xxx 4xxx and 48xx: versions prior to Version 1.35all versionscisa_csaf_otUS
PHOENIX CONTACT, Innominate Security Technologies FL SWITCH 3xxx 4xxx and 48xx< 1.35cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
phoenixcontact fl switch 3004t-fx firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3004t-fx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3004t-fx st firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3004t-fx_st_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3005 firmware≤ 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3005_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3005 firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3005_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3005t firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3005t_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3006t-2fx firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3006t-2fx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3006t-2fx sm firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3006t-2fx_sm_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3006t-2fx st firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3006t-2fx_st_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3008 firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3008_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3008t firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3008t_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3012e-2fx sm firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3012e-2fx_sm_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3012e-2sfx firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3012e-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3016 firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3016_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3016e firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3016e_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 3016t firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_3016t_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 4000t-8poe-2sfp-r firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_4000t-8poe-2sfp-r_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl switch 4008t-2gt-3fx sm firmware1.0 → 1.34nvdUScpe:2.3:o:phoenixcontact:fl_switch_4008t-2gt-3fx_sm_firmware:*:*:*:*:*:*:*:*

showing 20 of 129

05

advisories (2)

Vendor and ecosystem advisories describing this.

VDE-2019-001PHOENIX CONTACT: Multiple Vulnerabilities in FL SWITCH 3xxx, 4xxx and 48xx2019-01-23csaf · phoenix_contact_psirtDE
Multiple vulnerabilities for FL SWITCH have been identified in PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, 48xx version 1.0 to 1.34.
ICSA-19-024-02PHOENIX CONTACT FL SWITCH2019-01-24icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities may allow attackers to have user privileges, gain access to the switch, read user credentials, deny access to the switch, or perform man-in-the-middle attacks.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd phoenix_contact_psirt NVD CVE.org MITRE

published 2019-05-07modified 2026-06-17

08

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09

references (9)

External citations — patches, advisories, analysis.

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