CVE-2025-41696
Medium
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.
SeverityMedium
CVSS4.6
Exploit probability—
ProductPhoenixcontact Fl Switch 2708 Pn Firmware
PublishedDec 9, 2025
First seenDec 9, 2025
Weakness typeCWE-798Hard-coded credentials
How to fix
Update
- phoenixcontact fl_switch_2708_pn_firmware3.50 or later
- phoenixcontact fl_switch_2708_firmware3.50 or later
- phoenixcontact fl_switch_2608_pn_firmware3.50 or later
- phoenixcontact fl_switch_2608_firmware3.50 or later
- phoenixcontact fl_switch_2516_pn_firmware3.50 or later
- phoenixcontact fl_switch_2516_firmware3.50 or later
- phoenixcontact fl_switch_2514-2sfp_pn_firmware3.50 or later
- phoenixcontact fl_switch_2514-2sfp_firmware3.50 or later
- phoenixcontact fl_switch_2512-2gc-2sfp_firmware3.50 or later
- phoenixcontact fl_switch_2508_pn_firmware3.50 or later
- phoenixcontact fl_switch_2508\/k1_firmware3.50 or later
- phoenixcontact fl_switch_2508_firmware3.50 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phoenixcontact fl_switch_2708_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2708_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2608_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2608_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2516_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2516_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2514-2sfp_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2514-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2512-2gc-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2508_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2508\/k1_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2508_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2506-2sfp_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2506-2sfp\/k1_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2506-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2504-2gc-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2416_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2416_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2414-2sfx_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2414-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2412-2tc-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2408_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2408_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2406-2sfx_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2406-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2404-2tc-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2316_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2316\/k1_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2316_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2314-2sfp_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2314-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2312-2gc-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2308_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2308_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2306-2sfp_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2306-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2304-2gc-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2303-8sp1 | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2216_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2216_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2214-2sfx_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2214-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2214-2fx_sm_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2214-2fx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2212-2tc-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2208c_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2208_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2208_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2207-fx_sm_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2207-fx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206c-2fx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206-2sfx_pn_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206-2fx_st_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206-2fx_sm_st_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206-2fx_sm_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2206-2fx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2205_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2204-2tc-2sfx_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2116_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2108_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2105_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2016_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2008f_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2008_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_switch_2005_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_nat_2304-2gc-2sfp_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_nat_2208_firmware | v < 3.50 | 3.50 |
| phoenixcontact fl_nat_2008_firmware | v < 3.50 | 3.50 |
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