You want to know if the Edge SWG (ProxySG) is vulnerable to OpenSSL vulnerability CVE-2022-0778.
In the SGOS 6.7 release line, CVE-2022-0778 has been addressed in SGOS 6.7.5.17 and later.
In the SGOS 7.3 release line, CVE-2022-0778 has been addressed in SGOS 7.3.8.1 and later.
For more information regarding CVE-2022-0778 see this link to the official website:
https://nvd.nist.gov/vuln/detail/CVE-2022-0778