The vSphere Web Client (FLEX/Flash) contains an unauthorized arbitrary file read vulnerability. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to gain access to sensitive information.
https://github.com/pratikjojode/vcenter-cve-2021-21980-lab
https://github.com/gui2000guix-ui/cve-2021-21980-nuclei-poc
https://github.com/pkxk5pr6m2-web/cve-2021-21980-nuclei-poc
https://github.com/Osyanina/westone-CVE-2022-1388-scanner
https://github.com/Osyanina/westone-CVE-2021-21980-scanner
https://www.vmware.com/security/advisories/VMSA-2021-0027.html