---
id: CVE-2025-41695
title: >-
  An XSS vulnerability in dyn_conn.php can be used by an unauthenticated remote
  attacker to trick an authenticated user to send a manipulated POST request to
  the device in order to change parameters available via web based management
  (WBM)…
summary: >-
  An XSS vulnerability in dyn_conn.php can be used by an unauthenticated remote
  attacker to trick an authenticated user to send a manipulated POST request to
  the device 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_nat_2008_firmware
affected:
  - 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_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_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_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_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_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-2025-41695'
references:
  - url: 'https://certvde.com/de/advisories/VDE-2025-071'
    label: info@cert.vde.com
tags:
  - nvd
epss: 0.0066
epssPercentile: 0.49674
ingestedAt: '2026-09-30T20:23:19.437Z'
---

## Overview

An XSS vulnerability in dyn_conn.php can be used by an unauthenticated remote attacker to trick an authenticated user to send a manipulated POST request to the device 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_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_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_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_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_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_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`