Medium severity · published Dec 9, 2025
CVE-2025-41697
Shell access to UART Console
6.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FS
FL SWITCH 2005 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2008 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2016 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2105 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2108 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2116 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2204-2TC-2SFX · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2205 · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2206-2FX · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2206-2FX SM · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2206-2FX SM ST · Phoenix Contact
0.0.0 before 3.50 · source: vendor
FS
FL SWITCH 2206-2FX ST · Phoenix Contact
0.0.0 before 3.50 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-41697
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-41697
Third Party Advisory
https://certvde.com/de/advisories/VDE-2025-071
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