---
id: CVE-2025-41749
title: >-
  An XSS vulnerability in port_util.php can be used by an unauthenticated remote
  attacker to trick an authenticated user to click on the link provided by the
  attacker in order to change parameters available via web based management
  (WBM)
summary: >-
  An XSS vulnerability in port_util.php can be used by an unauthenticated remote
  attacker to trick an authenticated user to click on the link provided by the
  attacker in order to change parameters available via web based management
  (WBM). …
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'
cwe:
  - CWE-79
vendor: phoenixcontact
product: fl_switch_2008f_firmware
affected:
  - fl_switch_2008f_firmware < 3.50
  - fl_switch_2016_firmware < 3.50
  - fl_switch_2105_firmware < 3.50
  - fl_switch_2108_firmware < 3.50
  - fl_switch_2116_firmware < 3.50
  - fl_switch_2204-2tc-2sfx_firmware < 3.50
  - fl_switch_2205_firmware < 3.50
  - fl_switch_2206-2fx_firmware < 3.50
  - fl_switch_2206-2fx_sm_firmware < 3.50
  - fl_switch_2206-2fx_sm_st_firmware < 3.50
  - fl_switch_2206-2fx_st_firmware < 3.50
  - fl_switch_2206-2sfx_firmware < 3.50
  - fl_switch_2206-2sfx_pn_firmware < 3.50
  - fl_switch_2206c-2fx_firmware < 3.50
  - fl_switch_2207-fx_firmware < 3.50
  - fl_switch_2207-fx_sm_firmware < 3.50
  - fl_switch_2208_firmware < 3.50
  - fl_switch_2208_pn_firmware < 3.50
  - fl_switch_2208c_firmware < 3.50
  - fl_switch_2212-2tc-2sfx_firmware < 3.50
  - fl_switch_2214-2fx_firmware < 3.50
  - fl_switch_2214-2fx_sm_firmware < 3.50
  - fl_switch_2214-2sfx_firmware < 3.50
  - fl_switch_2214-2sfx_pn_firmware < 3.50
  - fl_switch_2216_firmware < 3.50
  - fl_switch_2216_pn_firmware < 3.50
  - fl_switch_2303-8sp1 < 3.50
  - fl_switch_2304-2gc-2sfp_firmware < 3.50
  - fl_switch_2306-2sfp_firmware < 3.50
  - fl_switch_2306-2sfp_pn_firmware < 3.50
  - fl_switch_2308_firmware < 3.50
  - fl_switch_2308_pn_firmware < 3.50
  - fl_switch_2312-2gc-2sfp_firmware < 3.50
  - fl_switch_2314-2sfp_firmware < 3.50
  - fl_switch_2314-2sfp_pn_firmware < 3.50
  - fl_switch_2316_firmware < 3.50
  - fl_switch_2316/k1_firmware < 3.50
  - fl_switch_2316_pn_firmware < 3.50
  - fl_switch_2404-2tc-2sfx_firmware < 3.50
  - fl_switch_2406-2sfx_firmware < 3.50
  - fl_nat_2008_firmware < 3.50
  - fl_nat_2208_firmware < 3.50
  - fl_nat_2304-2gc-2sfp_firmware < 3.50
  - fl_switch_2005_firmware < 3.50
  - fl_switch_2008_firmware < 3.50
  - fl_switch_2406-2sfx_pn_firmware < 3.50
  - fl_switch_2408_firmware < 3.50
  - fl_switch_2408_pn_firmware < 3.50
  - fl_switch_2412-2tc-2sfx_firmware < 3.50
  - fl_switch_2414-2sfx_firmware < 3.50
  - fl_switch_2414-2sfx_pn_firmware < 3.50
  - fl_switch_2416_firmware < 3.50
  - fl_switch_2416_pn_firmware < 3.50
  - fl_switch_2504-2gc-2sfp_firmware < 3.50
  - fl_switch_2506-2sfp_firmware < 3.50
  - fl_switch_2506-2sfp/k1_firmware < 3.50
  - fl_switch_2506-2sfp_pn_firmware < 3.50
  - fl_switch_2508_firmware < 3.50
  - fl_switch_2508/k1_firmware < 3.50
  - fl_switch_2508_pn_firmware < 3.50
  - fl_switch_2512-2gc-2sfp_firmware < 3.50
  - fl_switch_2514-2sfp_firmware < 3.50
  - fl_switch_2514-2sfp_pn_firmware < 3.50
  - fl_switch_2516_firmware < 3.50
  - fl_switch_2516_pn_firmware < 3.50
  - fl_switch_2608_firmware < 3.50
  - fl_switch_2608_pn_firmware < 3.50
  - fl_switch_2708_firmware < 3.50
  - fl_switch_2708_pn_firmware < 3.50
patched:
  - fl_switch_2008f_firmware 3.50
  - fl_switch_2016_firmware 3.50
  - fl_switch_2105_firmware 3.50
  - fl_switch_2108_firmware 3.50
  - fl_switch_2116_firmware 3.50
  - fl_switch_2204-2tc-2sfx_firmware 3.50
  - fl_switch_2205_firmware 3.50
  - fl_switch_2206-2fx_firmware 3.50
  - fl_switch_2206-2fx_sm_firmware 3.50
  - fl_switch_2206-2fx_sm_st_firmware 3.50
  - fl_switch_2206-2fx_st_firmware 3.50
  - fl_switch_2206-2sfx_firmware 3.50
  - fl_switch_2206-2sfx_pn_firmware 3.50
  - fl_switch_2206c-2fx_firmware 3.50
  - fl_switch_2207-fx_firmware 3.50
  - fl_switch_2207-fx_sm_firmware 3.50
  - fl_switch_2208_firmware 3.50
  - fl_switch_2208_pn_firmware 3.50
  - fl_switch_2208c_firmware 3.50
  - fl_switch_2212-2tc-2sfx_firmware 3.50
  - fl_switch_2214-2fx_firmware 3.50
  - fl_switch_2214-2fx_sm_firmware 3.50
  - fl_switch_2214-2sfx_firmware 3.50
  - fl_switch_2214-2sfx_pn_firmware 3.50
  - fl_switch_2216_firmware 3.50
  - fl_switch_2216_pn_firmware 3.50
  - fl_switch_2303-8sp1 3.50
  - fl_switch_2304-2gc-2sfp_firmware 3.50
  - fl_switch_2306-2sfp_firmware 3.50
  - fl_switch_2306-2sfp_pn_firmware 3.50
  - fl_switch_2308_firmware 3.50
  - fl_switch_2308_pn_firmware 3.50
  - fl_switch_2312-2gc-2sfp_firmware 3.50
  - fl_switch_2314-2sfp_firmware 3.50
  - fl_switch_2314-2sfp_pn_firmware 3.50
  - fl_switch_2316_firmware 3.50
  - fl_switch_2316/k1_firmware 3.50
  - fl_switch_2316_pn_firmware 3.50
  - fl_switch_2404-2tc-2sfx_firmware 3.50
  - fl_switch_2406-2sfx_firmware 3.50
  - fl_nat_2008_firmware 3.50
  - fl_nat_2208_firmware 3.50
  - fl_nat_2304-2gc-2sfp_firmware 3.50
  - fl_switch_2005_firmware 3.50
  - fl_switch_2008_firmware 3.50
  - fl_switch_2406-2sfx_pn_firmware 3.50
  - fl_switch_2408_firmware 3.50
  - fl_switch_2408_pn_firmware 3.50
  - fl_switch_2412-2tc-2sfx_firmware 3.50
  - fl_switch_2414-2sfx_firmware 3.50
  - fl_switch_2414-2sfx_pn_firmware 3.50
  - fl_switch_2416_firmware 3.50
  - fl_switch_2416_pn_firmware 3.50
  - fl_switch_2504-2gc-2sfp_firmware 3.50
  - fl_switch_2506-2sfp_firmware 3.50
  - fl_switch_2506-2sfp/k1_firmware 3.50
  - fl_switch_2506-2sfp_pn_firmware 3.50
  - fl_switch_2508_firmware 3.50
  - fl_switch_2508/k1_firmware 3.50
  - fl_switch_2508_pn_firmware 3.50
  - fl_switch_2512-2gc-2sfp_firmware 3.50
  - fl_switch_2514-2sfp_firmware 3.50
  - fl_switch_2514-2sfp_pn_firmware 3.50
  - fl_switch_2516_firmware 3.50
  - fl_switch_2516_pn_firmware 3.50
  - fl_switch_2608_firmware 3.50
  - fl_switch_2608_pn_firmware 3.50
  - fl_switch_2708_firmware 3.50
  - fl_switch_2708_pn_firmware 3.50
published: '2025-12-09'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T20:10:00.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-41749'
references:
  - url: 'https://certvde.com/de/advisories/VDE-2025-071'
    label: info@cert.vde.com
tags:
  - nvd
epss: 0.00653
epssPercentile: 0.49402
ingestedAt: '2026-09-30T20:23:19.440Z'
---

## Overview

An XSS vulnerability in port_util.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provided by the attacker in order to change parameters available via web based management (WBM). The vulnerability does not provide access to system-level resources such as operating system internals or privileged functions. Access is limited to device configuration parameters that are available in the context of the web application. The session cookie is secured by the httpOnly Flag. Therefore an attacker is not able to take over the session of an authenticated user.

## Affected

- `fl_switch_2008f_firmware < 3.50`
- `fl_switch_2016_firmware < 3.50`
- `fl_switch_2105_firmware < 3.50`
- `fl_switch_2108_firmware < 3.50`
- `fl_switch_2116_firmware < 3.50`
- `fl_switch_2204-2tc-2sfx_firmware < 3.50`
- `fl_switch_2205_firmware < 3.50`
- `fl_switch_2206-2fx_firmware < 3.50`
- `fl_switch_2206-2fx_sm_firmware < 3.50`
- `fl_switch_2206-2fx_sm_st_firmware < 3.50`
- `fl_switch_2206-2fx_st_firmware < 3.50`
- `fl_switch_2206-2sfx_firmware < 3.50`
- `fl_switch_2206-2sfx_pn_firmware < 3.50`
- `fl_switch_2206c-2fx_firmware < 3.50`
- `fl_switch_2207-fx_firmware < 3.50`
- `fl_switch_2207-fx_sm_firmware < 3.50`
- `fl_switch_2208_firmware < 3.50`
- `fl_switch_2208_pn_firmware < 3.50`
- `fl_switch_2208c_firmware < 3.50`
- `fl_switch_2212-2tc-2sfx_firmware < 3.50`
- `fl_switch_2214-2fx_firmware < 3.50`
- `fl_switch_2214-2fx_sm_firmware < 3.50`
- `fl_switch_2214-2sfx_firmware < 3.50`
- `fl_switch_2214-2sfx_pn_firmware < 3.50`
- `fl_switch_2216_firmware < 3.50`
- `fl_switch_2216_pn_firmware < 3.50`
- `fl_switch_2303-8sp1 < 3.50`
- `fl_switch_2304-2gc-2sfp_firmware < 3.50`
- `fl_switch_2306-2sfp_firmware < 3.50`
- `fl_switch_2306-2sfp_pn_firmware < 3.50`
- `fl_switch_2308_firmware < 3.50`
- `fl_switch_2308_pn_firmware < 3.50`
- `fl_switch_2312-2gc-2sfp_firmware < 3.50`
- `fl_switch_2314-2sfp_firmware < 3.50`
- `fl_switch_2314-2sfp_pn_firmware < 3.50`
- `fl_switch_2316_firmware < 3.50`
- `fl_switch_2316/k1_firmware < 3.50`
- `fl_switch_2316_pn_firmware < 3.50`
- `fl_switch_2404-2tc-2sfx_firmware < 3.50`
- `fl_switch_2406-2sfx_firmware < 3.50`
- `fl_nat_2008_firmware < 3.50`
- `fl_nat_2208_firmware < 3.50`
- `fl_nat_2304-2gc-2sfp_firmware < 3.50`
- `fl_switch_2005_firmware < 3.50`
- `fl_switch_2008_firmware < 3.50`
- `fl_switch_2406-2sfx_pn_firmware < 3.50`
- `fl_switch_2408_firmware < 3.50`
- `fl_switch_2408_pn_firmware < 3.50`
- `fl_switch_2412-2tc-2sfx_firmware < 3.50`
- `fl_switch_2414-2sfx_firmware < 3.50`
- `fl_switch_2414-2sfx_pn_firmware < 3.50`
- `fl_switch_2416_firmware < 3.50`
- `fl_switch_2416_pn_firmware < 3.50`
- `fl_switch_2504-2gc-2sfp_firmware < 3.50`
- `fl_switch_2506-2sfp_firmware < 3.50`
- `fl_switch_2506-2sfp/k1_firmware < 3.50`
- `fl_switch_2506-2sfp_pn_firmware < 3.50`
- `fl_switch_2508_firmware < 3.50`
- `fl_switch_2508/k1_firmware < 3.50`
- `fl_switch_2508_pn_firmware < 3.50`
- `fl_switch_2512-2gc-2sfp_firmware < 3.50`
- `fl_switch_2514-2sfp_firmware < 3.50`
- `fl_switch_2514-2sfp_pn_firmware < 3.50`
- `fl_switch_2516_firmware < 3.50`
- `fl_switch_2516_pn_firmware < 3.50`
- `fl_switch_2608_firmware < 3.50`
- `fl_switch_2608_pn_firmware < 3.50`
- `fl_switch_2708_firmware < 3.50`
- `fl_switch_2708_pn_firmware < 3.50`

## Remediation

Upgrade past the affected range:

- `fl_switch_2008f_firmware 3.50`
- `fl_switch_2016_firmware 3.50`
- `fl_switch_2105_firmware 3.50`
- `fl_switch_2108_firmware 3.50`
- `fl_switch_2116_firmware 3.50`
- `fl_switch_2204-2tc-2sfx_firmware 3.50`
- `fl_switch_2205_firmware 3.50`
- `fl_switch_2206-2fx_firmware 3.50`
- `fl_switch_2206-2fx_sm_firmware 3.50`
- `fl_switch_2206-2fx_sm_st_firmware 3.50`
- `fl_switch_2206-2fx_st_firmware 3.50`
- `fl_switch_2206-2sfx_firmware 3.50`
- `fl_switch_2206-2sfx_pn_firmware 3.50`
- `fl_switch_2206c-2fx_firmware 3.50`
- `fl_switch_2207-fx_firmware 3.50`
- `fl_switch_2207-fx_sm_firmware 3.50`
- `fl_switch_2208_firmware 3.50`
- `fl_switch_2208_pn_firmware 3.50`
- `fl_switch_2208c_firmware 3.50`
- `fl_switch_2212-2tc-2sfx_firmware 3.50`
- `fl_switch_2214-2fx_firmware 3.50`
- `fl_switch_2214-2fx_sm_firmware 3.50`
- `fl_switch_2214-2sfx_firmware 3.50`
- `fl_switch_2214-2sfx_pn_firmware 3.50`
- `fl_switch_2216_firmware 3.50`
- `fl_switch_2216_pn_firmware 3.50`
- `fl_switch_2303-8sp1 3.50`
- `fl_switch_2304-2gc-2sfp_firmware 3.50`
- `fl_switch_2306-2sfp_firmware 3.50`
- `fl_switch_2306-2sfp_pn_firmware 3.50`
- `fl_switch_2308_firmware 3.50`
- `fl_switch_2308_pn_firmware 3.50`
- `fl_switch_2312-2gc-2sfp_firmware 3.50`
- `fl_switch_2314-2sfp_firmware 3.50`
- `fl_switch_2314-2sfp_pn_firmware 3.50`
- `fl_switch_2316_firmware 3.50`
- `fl_switch_2316/k1_firmware 3.50`
- `fl_switch_2316_pn_firmware 3.50`
- `fl_switch_2404-2tc-2sfx_firmware 3.50`
- `fl_switch_2406-2sfx_firmware 3.50`
- `fl_nat_2008_firmware 3.50`
- `fl_nat_2208_firmware 3.50`
- `fl_nat_2304-2gc-2sfp_firmware 3.50`
- `fl_switch_2005_firmware 3.50`
- `fl_switch_2008_firmware 3.50`
- `fl_switch_2406-2sfx_pn_firmware 3.50`
- `fl_switch_2408_firmware 3.50`
- `fl_switch_2408_pn_firmware 3.50`
- `fl_switch_2412-2tc-2sfx_firmware 3.50`
- `fl_switch_2414-2sfx_firmware 3.50`
- `fl_switch_2414-2sfx_pn_firmware 3.50`
- `fl_switch_2416_firmware 3.50`
- `fl_switch_2416_pn_firmware 3.50`
- `fl_switch_2504-2gc-2sfp_firmware 3.50`
- `fl_switch_2506-2sfp_firmware 3.50`
- `fl_switch_2506-2sfp/k1_firmware 3.50`
- `fl_switch_2506-2sfp_pn_firmware 3.50`
- `fl_switch_2508_firmware 3.50`
- `fl_switch_2508/k1_firmware 3.50`
- `fl_switch_2508_pn_firmware 3.50`
- `fl_switch_2512-2gc-2sfp_firmware 3.50`
- `fl_switch_2514-2sfp_firmware 3.50`
- `fl_switch_2514-2sfp_pn_firmware 3.50`
- `fl_switch_2516_firmware 3.50`
- `fl_switch_2516_pn_firmware 3.50`
- `fl_switch_2608_firmware 3.50`
- `fl_switch_2608_pn_firmware 3.50`
- `fl_switch_2708_firmware 3.50`
- `fl_switch_2708_pn_firmware 3.50`