CVE-2021-21865
HIGHCODESYS Development System 3.5.16 - Remote Code Execution via Unsafe Deserialization in PackageManagement.plugin
Title source: llmDescription
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.
References (2)
Core 2
Core References
Not Applicable, Third Party Advisory x_refsource_misc
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301
Mitigation, Patch, Vendor Advisory x_refsource_confirm
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=
Scores
CVSS v3
7.8
EPSS
0.0130
EPSS Percentile
66.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-502
Status
published
Products (2)
codesys/development_system
3.5.16.0
codesys/development_system
3.5.17.0
Published
Aug 02, 2021
Tracked Since
Feb 18, 2026