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CVE-2021-34570

Phoenix Contact: DoS for PLCnext Control devices in versions prior to 2021.0.5 LTS

Published: Sep 27, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-20
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.9%
Top 43.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-20

Affected Products

AXC FPhoenix ContactICS / OT / IoT
RFCPhoenix ContactICS / OT / IoT
PLCnextPhoenix ContactICS / OT / IoT
plcnext technology starterkit firmwarephoenixcontactICS / OT / IoT
axc f 2152 starterkit firmwarephoenixcontactICS / OT / IoT
phoenix contactcommercialDEICS / OT / IoTaka phoenixcontact
phoenixcontactcommercialDEICS / OT / IoT
and 4 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://cert.vde.com/en/advisories/VDE-2021-029/
cert.vde.com

Timeline

Published
Sep 27, 2021
Last Updated
Nov 21, 2024

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