Provide references for CVE-2021-40856.
Where can I find more information about CVE-2021-40856?
References are available at: https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analyses, http://packetstormsecurity.com/files/165162/Auerswald-COMfortel-1400-2600-3600-IP-2.8F-Authentication-Bypass.html, https://www.redteam-pentesting.de/en/advisories/rt-sa-2021-004/-auerswald-comfortel-1400-2600-3600-ip-authentication-bypass.