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Medium 6.8Published Dec 9, 2025
CVE-2025-41697An attacker can use an undocumented UART port on the PCB as a side-channel to get root access e.g.
Updated under an hour ago ()
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It affects phoenixcontact fl_switch_2708_pn_firmware and 59 other products. Add what you run to find out whether that includes you.
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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.
- CVSS
- 6.8 MEDIUM (v3.1, NVD)CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-1299
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
phoenixcontact fl_switch_2708_pn_firmware phoenixcontact:fl_switch_2708_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2708_firmware phoenixcontact:fl_switch_2708_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2608_pn_firmware phoenixcontact:fl_switch_2608_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2608_firmware phoenixcontact:fl_switch_2608_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2516_pn_firmware phoenixcontact:fl_switch_2516_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2516_firmware phoenixcontact:fl_switch_2516_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2514-2sfp_pn_firmware phoenixcontact:fl_switch_2514-2sfp_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2514-2sfp_firmware phoenixcontact:fl_switch_2514-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2512-2gc-2sfp_firmware phoenixcontact:fl_switch_2512-2gc-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2508_pn_firmware phoenixcontact:fl_switch_2508_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2508/k1_firmware phoenixcontact:fl_switch_2508/k1_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2508_firmware phoenixcontact:fl_switch_2508_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2506-2sfp_pn_firmware phoenixcontact:fl_switch_2506-2sfp_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2506-2sfp/k1_firmware phoenixcontact:fl_switch_2506-2sfp/k1_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2506-2sfp_firmware phoenixcontact:fl_switch_2506-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2504-2gc-2sfp_firmware phoenixcontact:fl_switch_2504-2gc-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2416_pn_firmware phoenixcontact:fl_switch_2416_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2416_firmware phoenixcontact:fl_switch_2416_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2414-2sfx_pn_firmware phoenixcontact:fl_switch_2414-2sfx_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2414-2sfx_firmware phoenixcontact:fl_switch_2414-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2412-2tc-2sfx_firmware phoenixcontact:fl_switch_2412-2tc-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2408_pn_firmware phoenixcontact:fl_switch_2408_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2408_firmware phoenixcontact:fl_switch_2408_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2406-2sfx_pn_firmware phoenixcontact:fl_switch_2406-2sfx_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2406-2sfx_firmware phoenixcontact:fl_switch_2406-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2404-2tc-2sfx_firmware phoenixcontact:fl_switch_2404-2tc-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2316_pn_firmware phoenixcontact:fl_switch_2316_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2316/k1_firmware phoenixcontact:fl_switch_2316/k1_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2316_firmware phoenixcontact:fl_switch_2316_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2314-2sfp_pn_firmware phoenixcontact:fl_switch_2314-2sfp_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2314-2sfp_firmware phoenixcontact:fl_switch_2314-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2312-2gc-2sfp_firmware phoenixcontact:fl_switch_2312-2gc-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2308_pn_firmware phoenixcontact:fl_switch_2308_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2308_firmware phoenixcontact:fl_switch_2308_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2306-2sfp_pn_firmware phoenixcontact:fl_switch_2306-2sfp_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2306-2sfp_firmware phoenixcontact:fl_switch_2306-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2304-2gc-2sfp_firmware phoenixcontact:fl_switch_2304-2gc-2sfp_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2303-8sp1 phoenixcontact:fl_switch_2303-8sp1 | before 3.50 | NVD |
phoenixcontact fl_switch_2216_pn_firmware phoenixcontact:fl_switch_2216_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2216_firmware phoenixcontact:fl_switch_2216_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2214-2sfx_pn_firmware phoenixcontact:fl_switch_2214-2sfx_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2214-2sfx_firmware phoenixcontact:fl_switch_2214-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2214-2fx_sm_firmware phoenixcontact:fl_switch_2214-2fx_sm_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2214-2fx_firmware phoenixcontact:fl_switch_2214-2fx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2212-2tc-2sfx_firmware phoenixcontact:fl_switch_2212-2tc-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2208c_firmware phoenixcontact:fl_switch_2208c_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2208_pn_firmware phoenixcontact:fl_switch_2208_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2208_firmware phoenixcontact:fl_switch_2208_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2207-fx_sm_firmware phoenixcontact:fl_switch_2207-fx_sm_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2207-fx_firmware phoenixcontact:fl_switch_2207-fx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206c-2fx_firmware phoenixcontact:fl_switch_2206c-2fx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206-2sfx_pn_firmware phoenixcontact:fl_switch_2206-2sfx_pn_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206-2sfx_firmware phoenixcontact:fl_switch_2206-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206-2fx_st_firmware phoenixcontact:fl_switch_2206-2fx_st_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206-2fx_sm_st_firmware phoenixcontact:fl_switch_2206-2fx_sm_st_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206-2fx_sm_firmware phoenixcontact:fl_switch_2206-2fx_sm_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2206-2fx_firmware phoenixcontact:fl_switch_2206-2fx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2205_firmware phoenixcontact:fl_switch_2205_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2204-2tc-2sfx_firmware phoenixcontact:fl_switch_2204-2tc-2sfx_firmware | before 3.50 | NVD |
phoenixcontact fl_switch_2116_firmware phoenixcontact:fl_switch_2116_firmware | before 3.50 | NVD |
References
- https://certvde.com/de/advisories/VDE-2025-071third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.