CVE-2025-41747

HIGH

Phoenix Contact FL NAT/SWITCH Firmware < 3.50 - Unauthenticated Cross-Site Scripting via pxc_vlanIntfCfg.php

Title source: llm
STIX 2.1

Description

An XSS vulnerability in pxc_vlanIntfCfg.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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.1
EPSS 0.0824
EPSS Percentile 94.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (50)
phoenixcontact/fl_nat_2008_firmware < 3.50
phoenixcontact/fl_nat_2208_firmware < 3.50
phoenixcontact/fl_nat_2304-2gc-2sfp_firmware < 3.50
phoenixcontact/fl_switch_2005_firmware < 3.50
phoenixcontact/fl_switch_2008_firmware < 3.50
phoenixcontact/fl_switch_2008f_firmware < 3.50
phoenixcontact/fl_switch_2016_firmware < 3.50
phoenixcontact/fl_switch_2105_firmware < 3.50
phoenixcontact/fl_switch_2108_firmware < 3.50
phoenixcontact/fl_switch_2116_firmware < 3.50
... and 40 more
Published Dec 09, 2025
Tracked Since Feb 18, 2026