CVE-2025-41696

MEDIUM

Phoenixcontact FL Switch 2708 PN Firmware - Hard-coded Credentials

Title source: rule

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.

References (1)

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

Scores

CVSS v3 4.6

EPSS 0.0002

EPSS Percentile 6.0%

Attack Vector PHYSICAL

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

Classification

CWE

CWE-798

Status published

Affected Products (50)

phoenixcontact/fl_switch_2708_pn_firmware < 3.50

phoenixcontact/fl_switch_2708_firmware < 3.50

phoenixcontact/fl_switch_2608_pn_firmware < 3.50

phoenixcontact/fl_switch_2608_firmware < 3.50

phoenixcontact/fl_switch_2516_pn_firmware < 3.50

phoenixcontact/fl_switch_2516_firmware < 3.50

phoenixcontact/fl_switch_2514-2sfp_pn_firmware < 3.50

phoenixcontact/fl_switch_2514-2sfp_firmware < 3.50

phoenixcontact/fl_switch_2512-2gc-2sfp_firmware < 3.50

phoenixcontact/fl_switch_2508_pn_firmware < 3.50

phoenixcontact/fl_switch_2508\/k1_firmware < 3.50

phoenixcontact/fl_switch_2508_firmware < 3.50

phoenixcontact/fl_switch_2506-2sfp_pn_firmware < 3.50

phoenixcontact/fl_switch_2506-2sfp\/k1_firmware < 3.50

phoenixcontact/fl_switch_2506-2sfp_firmware < 3.50

... and 35 more

Timeline

Published Dec 09, 2025

Tracked Since Feb 18, 2026