An audit of the ETH 2.0 specifications highlighted the need to address potential vulnerabilities with the protocol’s peer-to-peer (P2P) networking layer and block proposer system, according to the published findings.
As The Block previously explained, developers would need to implement a major multi-client testnet and run it for at least two months before the Phase 0 mainnet launch can take place. Therefore, it is unlikely that the launch will happen in the upcoming weeks.
Read in full https://www.theblockcrypto.com/post/59936/a-new-ethereum-2-0-audit-has-highlighted-potential-security-vulnerabilities