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Vulnerability record · CVE-2025-41696 · published 9 December 2025

CVE-2025-41696: Phoenixcontact fl switch 2708 pn firmware hard-coded credentials vulnerability

Phoenixcontact · Fl Switch 2708 Pn Firmware

An attacker can use an undocumented UART port on the PCB as a side-channel with the user hardcoded credentials obtained from CVE-2025-41692 to gain read access to parts of the filesystem of the device.

4.6 CVSS 3.1 Medium EPSS 0.21% · top 89.8% CWE-798 · Hard-coded credentials
4.6CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
69Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

An attacker can use an undocumented UART port on the PCB as a side-channel with the user hardcoded credentials obtained from CVE-2025-41692 to gain read access to parts of the filesystem of the device.

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

69 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://certvde.com/de/advisories/VDE-2025-071 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2022-22509Phoenixcontact fl switch 2005 firmware improper privilege management vulnerabilityIn Phoenix Contact FL SWITCH Series 2xxx in version 3.00 an incorrect privilege assignment allows an low privileged user to enable full access to the…EPSS 0.99%8.2CVE-2019-18352Phoenixcontact fl nat 2208 firmware vulnerabilityImproper access control exists on PHOENIX CONTACT FL NAT 2208 devices before V2.90 and FL NAT 2304-2GC-2SFP devices before V2.90 when using MAC-based…EPSS 0.44%7.1CVE-2025-41748Phoenixcontact fl nat 2008 firmware cross-site scripting vulnerabilityAn XSS vulnerability in pxc_Dot1xCfg.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provid…EPSS 9.8%7.1CVE-2025-41749Phoenixcontact fl switch 2008f firmware cross-site scripting vulnerabilityAn 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 …EPSS 0.65%7.1CVE-2025-41750Phoenixcontact fl switch 2008f firmware cross-site scripting vulnerabilityAn XSS vulnerability in pxc_PortCfg.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provide…EPSS 9.8%7.1CVE-2025-41751Phoenixcontact fl nat 2008 firmware cross-site scripting vulnerabilityAn XSS vulnerability in pxc_portCntr.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provid…EPSS 9.8%7.1CVE-2025-41752Phoenixcontact fl nat 2008 firmware cross-site scripting vulnerabilityAn XSS vulnerability in pxc_portSfp.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provide…EPSS 9.8%7.1CVE-2025-41745Phoenixcontact fl nat 2008 firmware cross-site scripting vulnerabilityAn XSS vulnerability in pxc_portCntr2.php can be used by an unauthenticated remote attacker to trick an authenticated user to send a manipulated POST…EPSS 0.65%

Source: NIST National Vulnerability Database (record CVE-2025-41696), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.