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CVE-2021-33541

Phoenix Contact: ILC1x Industrial controllers affected by Denial-of-Service vulnerability

Published: Jun 25, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-770
7.5HIGH
NVD MITRE
EPSS Score
1.5%
Top 29.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

Phoenix Contact Classic Line Controllers ILC1x0 and ILC1x1 in all versions/variants are affected by a Denial-of-Service vulnerability. The communication protocols and device access do not feature authentication measures. Remote attackers can use specially crafted IP packets to cause a denial of service on the PLC's network communication module. A successful attack stops all network communication. To restore the network connectivity the device needs to be restarted. The automation task is not affected.

No summary for this CVE yet.

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
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Weaknesses

CWE-770

Affected Products

phoenixcontact
commercial·DE
ilc1x0 firmware
ICS / OT / IoT
ilc1x1 firmware
ICS / OT / IoT
Phoenix Contact
commercial·DEaka phoenixcontact
ILC1x
ICS / OT / IoT

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://cert.vde.com/en-us/advisories/vde-2021-019
cert.vde.com

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