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HIGH · 7.5

CVE-2021-34570

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

Vulnerability Description

Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

CVSS Score

7.5

HIGH

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

Affected Products

VendorProductVersions
PhoenixcontactPlcnext Technology Starterkit Firmware< 2021.0.5
PhoenixcontactPlcnext Technology Starterkit-
PhoenixcontactAxc F 2152 Starterkit Firmware< 2021.0.5
PhoenixcontactAxc F 2152 Starterkit-
PhoenixcontactRfc 4072S Firmware< 2021.0.5
PhoenixcontactRfc 4072S-
PhoenixcontactAxc F 3152 Firmware< 2021.0.5
PhoenixcontactAxc F 3152-
PhoenixcontactAxc F 1152 Firmware< 2021.0.5
PhoenixcontactAxc F 1152-
PhoenixcontactAxc F 2152 Firmware< 2021.0.5
PhoenixcontactAxc F 2152-

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2021-34570?

CVE-2021-34570 is a vulnerability with a CVSS score of 7.5 (HIGH). Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.

How severe is CVE-2021-34570?

CVE-2021-34570 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-34570?

Check the references section above for vendor advisories and patch information. Affected products include: Phoenixcontact Plcnext Technology Starterkit Firmware, Phoenixcontact Plcnext Technology Starterkit, Phoenixcontact Axc F 2152 Starterkit Firmware, Phoenixcontact Axc F 2152 Starterkit, Phoenixcontact Rfc 4072S Firmware.