system
Provide references for <CVE-2021-21867>.
user
Where can I find more information about <CVE-2021-21867>?
assistant
References are available at: https://talosintelligence.com/vulnerability_reports/TALOS-2021-1304, https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=.