CVE-2025-41696

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. It has a CVSS v3.1 base score of 4.6 (MEDIUM).

CVE-2025-41696 has a CVSS v3.1 score of 4.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

CVE-2025-41696 affects products from phoenixcontact, specifically: fl_nat_2008, fl_nat_2008_firmware, fl_nat_2208, fl_nat_2208_firmware, fl_nat_2304-2gc-2sfp, fl_nat_2304-2gc-2sfp_firmware, fl_switch_2005, fl_switch_2005_firmware, fl_switch_2008, fl_switch_2008_firmware, fl_switch_2008f, fl_switch_2008f_firmware, fl_switch_2016, fl_switch_2016_firmware, fl_switch_2105, fl_switch_2105_firmware, fl_switch_2108, fl_switch_2108_firmware, fl_switch_2116, fl_switch_2116_firmware, fl_switch_2204-2tc-2sfx, fl_switch_2204-2tc-2sfx_firmware, fl_switch_2205, fl_switch_2205_firmware, fl_switch_2206-2fx, fl_switch_2206-2fx_firmware, fl_switch_2206-2fx_sm, fl_switch_2206-2fx_sm_firmware, fl_switch_2206-2fx_sm_st, fl_switch_2206-2fx_sm_st_firmware, fl_switch_2206-2fx_st, fl_switch_2206-2fx_st_firmware, fl_switch_2206-2sfx, fl_switch_2206-2sfx_firmware, fl_switch_2206-2sfx_pn, fl_switch_2206-2sfx_pn_firmware, fl_switch_2206c-2fx, fl_switch_2206c-2fx_firmware, fl_switch_2207-fx, fl_switch_2207-fx_firmware, fl_switch_2207-fx_sm, fl_switch_2207-fx_sm_firmware, fl_switch_2208, fl_switch_2208_firmware, fl_switch_2208_pn, fl_switch_2208_pn_firmware, fl_switch_2208c, fl_switch_2208c_firmware, fl_switch_2212-2tc-2sfx, fl_switch_2212-2tc-2sfx_firmware, fl_switch_2214-2fx, fl_switch_2214-2fx_firmware, fl_switch_2214-2fx_sm, fl_switch_2214-2fx_sm_firmware, fl_switch_2214-2sfx, fl_switch_2214-2sfx_firmware, fl_switch_2214-2sfx_pn, fl_switch_2214-2sfx_pn_firmware, fl_switch_2216, fl_switch_2216_firmware, fl_switch_2216_pn, fl_switch_2216_pn_firmware, fl_switch_2303-8sp1, fl_switch_2304-2gc-2sfp, fl_switch_2304-2gc-2sfp_firmware, fl_switch_2306-2sfp, fl_switch_2306-2sfp_firmware, fl_switch_2306-2sfp_pn, fl_switch_2306-2sfp_pn_firmware, fl_switch_2308, fl_switch_2308_firmware, fl_switch_2308_pn, fl_switch_2308_pn_firmware, fl_switch_2312-2gc-2sfp, fl_switch_2312-2gc-2sfp_firmware, fl_switch_2314-2sfp, fl_switch_2314-2sfp_firmware, fl_switch_2314-2sfp_pn, fl_switch_2314-2sfp_pn_firmware, fl_switch_2316, fl_switch_2316\/k1, fl_switch_2316\/k1_firmware, fl_switch_2316_firmware, fl_switch_2316_pn, fl_switch_2316_pn_firmware, fl_switch_2404-2tc-2sfx, fl_switch_2404-2tc-2sfx_firmware, fl_switch_2406-2sfx, fl_switch_2406-2sfx_firmware, fl_switch_2406-2sfx_pn, fl_switch_2406-2sfx_pn_firmware, fl_switch_2408, fl_switch_2408_firmware, fl_switch_2408_pn, fl_switch_2408_pn_firmware, fl_switch_2412-2tc-2sfx, fl_switch_2412-2tc-2sfx_firmware, fl_switch_2414-2sfx, fl_switch_2414-2sfx_firmware, fl_switch_2414-2sfx_pn, fl_switch_2414-2sfx_pn_firmware, fl_switch_2416, fl_switch_2416_firmware, fl_switch_2416_pn, fl_switch_2416_pn_firmware, fl_switch_2504-2gc-2sfp, fl_switch_2504-2gc-2sfp_firmware, fl_switch_2506-2sfp, fl_switch_2506-2sfp\/k1, fl_switch_2506-2sfp\/k1_firmware, fl_switch_2506-2sfp_firmware, fl_switch_2506-2sfp_pn, fl_switch_2506-2sfp_pn_firmware, fl_switch_2508, fl_switch_2508\/k1, fl_switch_2508\/k1_firmware, fl_switch_2508_firmware, fl_switch_2508_pn, fl_switch_2508_pn_firmware, fl_switch_2512-2gc-2sfp, fl_switch_2512-2gc-2sfp_firmware, fl_switch_2514-2sfp, fl_switch_2514-2sfp_firmware, fl_switch_2514-2sfp_pn, fl_switch_2514-2sfp_pn_firmware, fl_switch_2516, fl_switch_2516_firmware, fl_switch_2516_pn, fl_switch_2516_pn_firmware, fl_switch_2608, fl_switch_2608_firmware, fl_switch_2608_pn, fl_switch_2608_pn_firmware, fl_switch_2708, fl_switch_2708_firmware, fl_switch_2708_pn, fl_switch_2708_pn_firmware. Check the affected products table above for specific version ranges.

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