CVE-2021-21004 — HIGH (7.4)

Q: What is CVE-2021-21004?

CVE-2021-21004 is a vulnerability with a CVSS score of 7.4 (HIGH). In Phoenix Contact FL SWITCH SMCS series products in multiple versions an attacker may insert malicious code via LLDP frames into the web-based management which could then be executed by the client.

Q: How severe is CVE-2021-21004?

CVE-2021-21004 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-21004?

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.

Vulnerability Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions an attacker may insert malicious code via LLDP frames into the web-based management which could then be executed by the client.

CVSS Score

7.4

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Phoenixcontact	Fl Switch Smcs 16Tx Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 16Tx	-
Phoenixcontact	Fl Switch Smcs 14Tx\/2Fx Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 14Tx\/2Fx	-
Phoenixcontact	Fl Switch Smcs 14Tx\/2Fx-Sm Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 14Tx\/2Fx-Sm	-
Phoenixcontact	Fl Switch Smcs 8Gt Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 8Gt	-
Phoenixcontact	Fl Switch Smcs 6Gt\/2Sfp Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 6Gt\/2Sfp	-
Phoenixcontact	Fl Switch Smcs 8Tx-Pn Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 8Tx-Pn	-
Phoenixcontact	Fl Switch Smcs 4Tx-Pn Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 4Tx-Pn	-
Phoenixcontact	Fl Switch Smcs 8Tx Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 8Tx	-
Phoenixcontact	Fl Switch Smcs 6Tx\/2Sfp Firmware	<= 4.70
Phoenixcontact	Fl Switch Smcs 6Tx\/2Sfp	-
Phoenixcontact	Fl Switch Smn 6Tx\/2Pof-Pn Firmware	<= 4.70
Phoenixcontact	Fl Switch Smn 6Tx\/2Pof-Pn	-

Related Weaknesses (CWE)

CWE-79

References

https://cert.vde.com/en-us/advisories/vde-2021-023Not ApplicableThird Party Advisory
https://cert.vde.com/en-us/advisories/vde-2021-023Not ApplicableThird Party Advisory

FAQ

What is CVE-2021-21004?

CVE-2021-21004 is a vulnerability with a CVSS score of 7.4 (HIGH). In Phoenix Contact FL SWITCH SMCS series products in multiple versions an attacker may insert malicious code via LLDP frames into the web-based management which could then be executed by the client.

How severe is CVE-2021-21004?

CVE-2021-21004 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21004?

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.