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CVE-2021-21001

WAGO: PFC200 Access to files outside the home directory

Published: May 24, 2021Updated: Aug 15, 2025 Sources: CVE List NVD BDUCWE-22
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
1.1%
Top 37.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

On WAGO PFC200 devices in different firmware versions with special crafted packets an authorised attacker with network access to the device can access the file system with higher privileges.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-22

Affected Products

Series PFC200 ControllerWAGOICS / OT / IoT
Series Ethernet ControllerWAGOICS / OT / IoT
750-823 firmwarewagoICS / OT / IoT
750-829 firmwarewagoICS / OT / IoT
750-831 firmwarewagoICS / OT / IoT
wagocommercialDEICS / OT / IoT
and 51 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

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://cert.vde.com/en-us/advisories/vde-2021-014
cert.vde.com
https://nvd.nist.gov/vuln/detail/CVE-2021-21001
nvd.nist.gov

Timeline

Published
May 24, 2021
Last Updated
Aug 15, 2025

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