BlockBeats news, on June 1st, the official Sui Chinese team reviewed the mainnet downtime incident and stated that on Pacific Time (UTC-7), May 28, 2026 (Thursday) and May 29, 2026 (Friday), the Sui mainnet experienced three network outages. The first two outages were due to a crash vulnerability arising from the interaction between the Gas fee logic and the recently released version 1.72 (which introduced the Address Balances feature). The fix for Thursday's incident was a temporary patch aimed at quickly restoring network operations while the Sui core team develops a long-term solution. The team is aware that this temporary fix has a very low probability of causing network failures, but to expedite the restoration of the mainnet, the team accepted this risk. On Friday morning, the network triggered another variant of the known issue and failed again.

The third outage occurred during the routine Epoch switch on Friday afternoon when the validator nodes restarted to deploy the fix from Friday morning, triggering a long-dormant random number state saving flaw, causing the network to go down again.

The outage times were as follows: First: Thursday around 7:00 PT, restored at 13:30 PT; Second: Friday around 5:00 PT, restored at 8:30 PT; Third: Friday around 13:30 PT, restored at 19:20 PT;

The team emphasized that throughout the entire incident, user funds remained secure, and no confirmed transactions were rolled back after the network was restored. Currently, the Sui validator nodes have fully patched the original Gas Charging and Randomness State vulnerabilities, and network activity is back to normal.