CVE-2025-41696 | Hardcoded User Password

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.

Published: 2025-12-09 Last update: 2025-12-19 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-41696 is rated Low Risk (19.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.02%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-41696

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-09 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-41696

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 3.1 MEDIUM
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:P)
Hands-on access—USB, keyboard, opening the case—not something you do purely over the wire.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 0.9 3.6 [email protected]

Weakness enumeration for CVE-2025-41696

Affected software / configurations for CVE-2025-41696

Vendor Product Version Raw CPE
phoenixcontact fl_switch_2708_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2708_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2708_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2708_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2608_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2608_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2608_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2608_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2516_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2516_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2516_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2516_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2514-2sfp_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2514-2sfp_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2514-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2514-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2512-2gc-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2512-2gc-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2508_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2508_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2508\/k1_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2508\/k1_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2508_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2508_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2506-2sfp_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2506-2sfp_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2506-2sfp\/k1_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2506-2sfp\/k1_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2506-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2506-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2504-2gc-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2504-2gc-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2416_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2416_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2416_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2416_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2414-2sfx_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2414-2sfx_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2414-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2414-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2412-2tc-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2412-2tc-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2408_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2408_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2408_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2408_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2406-2sfx_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2406-2sfx_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2406-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2406-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2404-2tc-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2404-2tc-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2316_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2316_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2316\/k1_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2316\/k1_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2316_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2316_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2314-2sfp_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2314-2sfp_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2314-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2314-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2312-2gc-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2312-2gc-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2308_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2308_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2308_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2308_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2306-2sfp_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2306-2sfp_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2306-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2306-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2304-2gc-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2304-2gc-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2303-8sp1 < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2303-8sp1:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2216_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2216_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2216_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2216_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2214-2sfx_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2214-2sfx_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2214-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2214-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2214-2fx_sm_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2214-2fx_sm_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2214-2fx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2214-2fx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2212-2tc-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2212-2tc-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2208c_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2208c_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2208_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2208_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2208_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2208_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2207-fx_sm_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2207-fx_sm_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2207-fx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2207-fx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206c-2fx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206c-2fx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206-2sfx_pn_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206-2sfx_pn_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206-2fx_st_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206-2fx_st_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206-2fx_sm_st_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206-2fx_sm_st_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206-2fx_sm_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206-2fx_sm_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2206-2fx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2206-2fx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2205_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2205_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2204-2tc-2sfx_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2204-2tc-2sfx_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2116_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2116_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2108_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2108_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2105_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2105_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2016_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2016_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2008f_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2008f_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2008_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2008_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_switch_2005_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_switch_2005_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_nat_2304-2gc-2sfp_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_nat_2304-2gc-2sfp_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_nat_2208_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_nat_2208_firmware:*:*:*:*:*:*:*:*
phoenixcontact fl_nat_2008_firmware < 3.50 cpe:2.3:o:phoenixcontact:fl_nat_2008_firmware:*:*:*:*:*:*:*:*

References for CVE-2025-41696

URL Tags
https://certvde.com/de/advisories/VDE-2025-071 Third Party Advisory
cvelogic Threat Intelligence