Denial-of-Service Vulnerability in WAGO PFC 200 and PFC 100 Firmware
CVE-2019-5077

9.1CRITICAL

Key Information:

Vendor

Wago

Status
Wago Pfc200
Wago Pfc100
Vendor
CVE Published:
18 December 2019

What is CVE-2019-5077?

An exploitable denial-of-service vulnerability exists in the iocheckd service's I/O-Chec functionality within WAGO PFC 200 and PFC 100 firmware. When triggered by a specially crafted sequence of packets, the device can enter an error state, ceasing all network communications, which can significantly disrupt operations. Attackers can exploit this vulnerability by sending unauthenticated packets to the targeted device.

Affected Version(s)

WAGO PFC100 Firmware version 03.00.39(12)

WAGO PFC200 Firmware version 03.01.07(13)

WAGO PFC200 Firmware version 03.00.39(12)

References

https://talosintelligence.com/vulnerability_reports/TALOS...
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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