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CVE-2021-21868

An unsafe deserialization vulnerability exists in the ObjectManager.plugin Project.get_MissingTypes() functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted...

Published: Aug 18, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-502
NVD MITRE
7.8CVSSHIGH
EPSS Score
1.6%
Top 27.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Starting with Festo Automation Suite (FAS) version 2.8.0.138, the suite is delivered only with a connector to Codesys, rather than including Codesys directly. Prior to this version, Codesys was bundled within the FAS installation. From version 2.8.0.138 onwards, customers are required to download and install Codesys independently. This change impacts the handling of security vulnerabilities (CVEs) related to Codesys. Any Codesys-related security issues must now be addressed by the customer through their separate Codesys installation. The FAS itself includes only the connector component, which is maintained and updated within the suite. Please ensure that Codesys is kept up to date independently to mitigate any potential security risks associated with the Codesys software.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-502

Affected Products

EcoStruxure Machine ExpertSchneider ElectricICS / OT / IoT
CODESYS Development System V3CODESYS GmbHICS / OT / IoT
CODESYS SVNCODESYS GmbHICS / OT / IoT
Eurotherm E+PLCSchneider ElectricICS / OT / IoT
CODESYSn/a
schneider electriccommercialFRICS / OT / IoTaka schneider-electric
codesys gmbhcommercialDEICS / OT / IoTaka codesys
and 1 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

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=
customers.codesys.com
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1305
talosintelligence.com
https://www.se.com/ae/en/download/document/SEVD-2022-011-06/
se.com
and 231 more references View all →

Timeline

Published
Aug 18, 2021
Last Updated
Nov 21, 2024

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