What’s Vulnerable › Vulnerabilities

CVE-2021-29239

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-03 · updated 2026-06-17
• Weakness: CWE-345

Description

CODESYS Development System 3 before 3.5.17.0 displays or executes malicious documents or files embedded in libraries without first checking their validity.

Affected products

• CODESYS Development System: from 3.0 before 3.5.17.0 — fixed in 3.5.17.0

How to fix

Upgrade to a fixed version: CODESYS Development System 3.5.17.0. Check the vendor advisory for mitigations.

References

• https://customers.codesys.com/index.php
• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14639&token=fa836f8bd4a2184aa9323a639ca9f2aaf1538412&download=
• https://www.codesys.com/security/security-reports.html
• https://customers.codesys.com/index.php
• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14639&token=fa836f8bd4a2184aa9323a639ca9f2aaf1538412&download=
• https://www.codesys.com/security/security-reports.html

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