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
phoenixcontact: fl switch 2708 pn firmware; phoenixcontact: fl switch 2708 pn; phoenixcontact: fl switch 2708 firmware; phoenixcontact: fl switch 2708; phoenixcontact: fl switch 2608 pn firmware; phoenixcontact: fl switch 2608 pn; phoenixcontact: fl switch 2608 firmware; phoenixcontact: fl switch 2608; phoenixcontact: fl switch 2516 pn firmware; phoenixcontact: fl switch 2516 pn; phoenixcontact: fl switch 2516 firmware; phoenixcontact: fl switch 2516; phoenixcontact: fl switch 2514-2sfp pn firmware; phoenixcontact: fl switch 2514-2sfp pn; phoenixcontact: fl switch 2514-2sfp firmware
References1
- certvde.com/de/advisories/VDE-2025-071 Third Party Advisory
Metrics
- CVSS 3.1
-
6.8
MEDIUM
Score source: CNA
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 17 · as of 11 November 2026
- CWE
- CWE-1299
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