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OpenAdvisories
Medium · 6.8 CVE-2025-41697 EUVD-2025-201893GHSA-ccrq-w269-c7pj

Shell access to UART Console

Published Dec 9, 2025 · Updated Dec 9, 2025 · Assigned by CERTVDE

Vendor: Phoenix Contact Product: FL SWITCH 2005 Product: FL SWITCH 2008 Product: FL SWITCH 2016 Product: FL SWITCH 2105 Product: FL SWITCH 2108 Product: FL SWITCH 2116 Product: FL SWITCH 2204-2TC-2SFX Product: FL SWITCH 2205 Product: FL SWITCH 2206-2FX Product: FL SWITCH 2206-2FX SM Product: FL SWITCH 2206-2FX SM ST Product: FL SWITCH 2206-2FX ST Product: FL SWITCH 2206-2SFX Product: FL SWITCH 2206-2SFX PN Product: FL SWITCH 2206C-2FX Product: FL SWITCH 2207-FX Product: FL SWITCH 2207-FX SM Product: FL SWITCH 2208 Product: FL SWITCH 2208 PN Product: FL SWITCH 2208C Product: FL SWITCH 2212-2TC-2SFX Product: FL SWITCH 2214-2FX Product: FL SWITCH 2214-2FX SM Product: FL SWITCH 2214-2SFX Product: FL SWITCH 2214-2SFX PN Product: FL SWITCH 2216 Product: FL SWITCH 2216 PN Product: FL SWITCH 2304-2GC-2SFP Product: FL SWITCH 2306-2SFP Product: FL SWITCH 2306-2SFP PN Product: FL SWITCH 2308 Product: FL SWITCH 2308 PN Product: FL SWITCH 2312-2GC-2SFP Product: FL SWITCH 2314-2SFP Product: FL SWITCH 2314-2SFP PN Product: FL SWITCH 2316 Product: FL SWITCH 2316 PN Product: FL SWITCH 2404-2TC-2SFX Product: FL SWITCH 2406-2SFX Product: FL SWITCH 2406-2SFX PN Product: FL SWITCH 2408 Product: FL SWITCH 2408 PN Product: FL SWITCH 2412-2TC-2SFX Product: FL SWITCH 2414-2SFX Product: FL SWITCH 2414-2SFX PN Product: FL SWITCH 2416 Product: FL SWITCH 2416 PN Product: FL SWITCH 2504-2GC-2SFP Product: FL SWITCH 2506-2SFP Product: FL SWITCH 2506-2SFP PN Category: ICS / OT

Description

An attacker can use an undocumented UART port on the PCB as a side-channel to get root access e.g. with the credentials obtained from CVE-2025-41692.

Affected products

VendorProductAffectedFixed
Phoenix Contact FL SWITCH 2005 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2008 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2016 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2105 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2108 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2116 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2204-2TC-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2205 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206-2FX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206-2FX SM 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206-2FX SM ST 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206-2FX ST 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206-2SFX PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2206C-2FX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2207-FX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2207-FX SM 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2208 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2208 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2208C 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2212-2TC-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2214-2FX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2214-2FX SM 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2214-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2214-2SFX PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2216 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2216 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2304-2GC-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2306-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2306-2SFP PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2308 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2308 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2312-2GC-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2314-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2314-2SFP PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2316 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2316 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2404-2TC-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2406-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2406-2SFX PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2408 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2408 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2412-2TC-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2414-2SFX 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2414-2SFX PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2416 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2416 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2504-2GC-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2506-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2506-2SFP PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2508 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2508 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2512-2GC-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2514-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2514-2SFP PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2516 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2516 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2608 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2608 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2708 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2708 PN 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2303-8SP1 0.0.0 – < 3.50 3.50
Phoenix Contact FL NAT 2008 0.0.0 – < 3.50 3.50
Phoenix Contact FL NAT 2208 0.0.0 – < 3.50 3.50
Phoenix Contact FL NAT 2304-2GC-2SFP 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2008F 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2316/K1 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2506-2SFP/K1 0.0.0 – < 3.50 3.50
Phoenix Contact FL SWITCH 2508/K1 0.0.0 – < 3.50 3.50

Advisories 2

References