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Case File

CVE-2021-21865

HIGH · CVSS 7.8 EPSS 1.30%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-02 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. See the original NVD description below for full technical details.

CVE
CVE-2021-21865
Severity
HIGH
CVSS
7.8
EPSS
1.30%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)