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CVE-2021-21865

Published: Aug 2, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-502
NVD MITRE
7.8CVSSHIGH
EPSS Score
1.3%
Top 33.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A unsafe deserialization vulnerability exists in the PackageManagement.plugin ExtensionMethods.Clone() functionality of CODESYS GmbH CODESYS Development System 3.5.16. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.

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
Eurotherm E+PLCSchneider ElectricICS / OT / IoT
CODESYS Development SystemCODESYS GmbHICS / OT / IoT
development systemcodesysICS / OT / IoT
CODESYSn/a
schneider electriccommercialFRICS / OT / IoTaka schneider-electric
codesys gmbhcommercialDEICS / OT / IoTaka codesys
codesysoss-projectDEICS / OT / IoTaka codesys gmbh

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.phpeID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=
customers.codesys.com
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301
talosintelligence.com
https://www.se.com/ae/en/download/document/SEVD-2022-011-06/
se.com
and 230 more references View all →

Timeline

Published
Aug 2, 2021
Last Updated
Nov 21, 2024

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