The liblzma vulnerability does not have have anything to do with antivirus. Running antivirus doesn’t help with that. Same goes for log4j. The liblzma and log4j vulnerabilities didn’t get detected by antivirus and it didn’t help prevent it. Remote exploits can also only happen if you either have some service exposed to the internet or visiting a malicious website with a vulnerable browser. Antivirus can only prevent scriptkiddies but any sophisticated malware will just bypass av
Antivirus is not what’s stopping g remote exploits. For a remote exploit to work you either have to expose ports to the internet (port forwarding) and run a vulnerable service on said port or visit a malicious website with a vulnerable browser. Antivirus won’t protect you from more than a scriptkiddie regardless of whether or not it is a remote exploit