Please keep an eye out on the Advisory:
workaround kb: Workaround instructions to address CVE-2021-44228 in NSX-T Data Center (2.5.3-3.1.3) (87086) (vmware...
Advisory: VMSA-2021-0028.1 (vmware.com)
It does not seem the NSX-T Lb (not talking about NSX advanced load balancer) is vulnerable
NSX Advanced load balancer is not vulnerable: https://kb.vmware.com/s/article/87087