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.
Affected products
phoenixcontact: fl nat 2008 firmware; phoenixcontact: fl nat 2008; phoenixcontact: fl nat 2208 firmware; phoenixcontact: fl nat 2208; phoenixcontact: fl nat 2304-2gc-2sfp firmware; phoenixcontact: fl nat 2304-2gc-2sfp; phoenixcontact: fl switch 2005 firmware; phoenixcontact: fl switch 2005; phoenixcontact: fl switch 2008 firmware; phoenixcontact: fl switch 2008; phoenixcontact: fl switch 2008f firmware; phoenixcontact: fl switch 2008f; phoenixcontact: fl switch 2016 firmware; phoenixcontact: fl switch 2016; phoenixcontact: fl switch 2105 firmware
References1
- certvde.com/de/advisories/VDE-2025-071 Vendor Advisory
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L - EPSS — exploit probability
- 10% percentile: 96 · as of 11 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.