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Vulnerabilities

Vulnerability · CVE-2025-41696

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 file

Published Dec 9, 2025 · catalog updated Dec 9, 2025 · PHOENIX CONTACT FL SWITCH 2216

Last checked Oct 28, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-41696. EPSS is 0.21%. Act only if a listed version of PHOENIX CONTACT FL SWITCH 2216 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.21%
Remediation
Version ranges on file
Affected products
vendor PHOENIX CONTACT FL SWITCH 2216 0.0.0 <3.50

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor PHOENIX CONTACT FL SWITCH 2216 0.0.0 <3.500.0.0 <3.50

How to fix CVE-2025-41696

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-41696. EPSS is 0.21%. Act only if a listed version of PHOENIX CONTACT FL SWITCH 2216 is installed.

Which versions are affected?

Compare what you have installed with PHOENIX CONTACT FL SWITCH 2216 0.0.0 <3.50 0.0.0 <3.50. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.21%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 9, 2025 · EUVD

    Detected

    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.

  2. Dec 9, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-41696

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-41696

    30-day exploitation probability 0.21%

    first.org
  • EUVDVulnerability recordEUVD-2025-201890

    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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 28, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 28, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 27, 2026