CVE-2021-29242

HighCVSS 7.3/10Last modified Jun 17, 2026

Description

CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's addressing scheme and may re-route, add, remove or change low level communication packages.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://customers.codesys.com/index.phpPermissions Required, Vendor Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download=Vendor Advisory
https://www.codesys.com/security/security-reports.htmlVendor Advisory
https://customers.codesys.com/index.phpPermissions Required, Vendor Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14640&token=623b6fceb0579ef0f7505e29beefa5b3f8ac7873&download=Vendor Advisory
https://www.codesys.com/security/security-reports.htmlVendor Advisory

Timeline

Published: May 3, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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