Sui officially releases a review of the mainnet shutdown incident, stating that three major failures were caused by upgrades, with no rollback of any confirmed transactions.
Sui mainnet experienced three outages on May 28-29, 2026.
The first two were caused by an interaction bug between Gas billing logic and version 1.72's introduction of Address Balances, which was temporarily fixed for quick recovery and carried a very low probability of recurring failure;
on Friday afternoon during the Epoch switch, a latent random state bug was triggered again, causing the network to fail once more.
During the incident, funds remained secure, and after recovery, confirmed transactions were not rolled back.
Currently, the validation nodes have fixed the Gas Charging and Randomness State bugs, and the network has returned to normal.