Provide references for CVE-2021-1256.
Where can I find more information about CVE-2021-1256?
References are available at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-overwrite-XknRjGdB, https://kc.mcafee.com/corporate/index?page=content&id=SB10382.