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MEDIUM · 5.3

CVE-2021-21003

In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the de...

Vulnerability Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the device is not affected.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW

Affected Products

VendorProductVersions
PhoenixcontactFl Switch Smcs 16Tx Firmware<= 4.70
PhoenixcontactFl Switch Smcs 16Tx-
PhoenixcontactFl Switch Smcs 14Tx\/2Fx Firmware<= 4.70
PhoenixcontactFl Switch Smcs 14Tx\/2Fx-
PhoenixcontactFl Switch Smcs 14Tx\/2Fx-Sm Firmware<= 4.70
PhoenixcontactFl Switch Smcs 14Tx\/2Fx-Sm-
PhoenixcontactFl Switch Smcs 8Gt Firmware<= 4.70
PhoenixcontactFl Switch Smcs 8Gt-
PhoenixcontactFl Switch Smcs 6Gt\/2Sfp Firmware<= 4.70
PhoenixcontactFl Switch Smcs 6Gt\/2Sfp-
PhoenixcontactFl Switch Smcs 8Tx-Pn Firmware<= 4.70
PhoenixcontactFl Switch Smcs 8Tx-Pn-
PhoenixcontactFl Switch Smcs 4Tx-Pn Firmware<= 4.70
PhoenixcontactFl Switch Smcs 4Tx-Pn-
PhoenixcontactFl Switch Smcs 8Tx Firmware<= 4.70
PhoenixcontactFl Switch Smcs 8Tx-
PhoenixcontactFl Switch Smcs 6Tx\/2Sfp Firmware<= 4.70
PhoenixcontactFl Switch Smcs 6Tx\/2Sfp-
PhoenixcontactFl Switch Smn 6Tx\/2Pof-Pn Firmware<= 4.70
PhoenixcontactFl Switch Smn 6Tx\/2Pof-Pn-

Related Weaknesses (CWE)

CWE-404

References

FAQ

What is CVE-2021-21003?

CVE-2021-21003 is a vulnerability with a CVSS score of 5.3 (MEDIUM). In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the de...

How severe is CVE-2021-21003?

CVE-2021-21003 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21003?

Check the references section above for vendor advisories and patch information. Affected products include: Phoenixcontact Fl Switch Smcs 16Tx Firmware, Phoenixcontact Fl Switch Smcs 16Tx, Phoenixcontact Fl Switch Smcs 14Tx\/2Fx Firmware, Phoenixcontact Fl Switch Smcs 14Tx\/2Fx, Phoenixcontact Fl Switch Smcs 14Tx\/2Fx-Sm Firmware.