Sui Network’s official account confirmed on May 29 on X that activity on the Sui mainnet has been restored. Previously, the network stalled (Network Stall) due to a Gas fee logic collapse vulnerability introduced with version 1.72. Sui officials confirmed that a complete incident recap will be published within the next few days. During this downtime, operations such as Sui mainnet fund transfers, DeFi contract interactions, and NFT minting were all halted.
Sui Officially Confirmed Downtime Cause: A Gas Fee Logic Breakdown Bug Introduced in Version 1.72
In its May 29 early-morning restoration announcement, Sui officials explicitly confirmed that the root cause of the network stall was the Gas fee logic breakdown bug introduced in version 1.72. During the downtime, the Sui Core core team posted a confirmation on X: “The Sui mainnet is currently experiencing a network stall.
Sui Core is actively working to find a solution. Please note that all transactions may be temporarily paused.” Sui officials also confirmed in the restoration announcement that a complete technical incident recap and a detailed failure analysis will be shared with the community and developers in the coming days, but no specific date was provided in the announcement.
Impact Scope Confirmed During the Network Downtime
Sui officials confirmed that this network stall caused all on-chain operations on the mainnet to be fully halted, including fund transfers, DeFi contract interactions, and NFT minting. The exact duration of the downtime was not clearly specified in Sui officials’ current announcements. During the downtime, Sui officials advised users to avoid any on-chain operations before the official announcement of full restoration.
FAQ
What is the confirmed root cause of this Sui mainnet downtime?
Sui officials confirmed in the May 29, 2026 early-morning restoration announcement that the root cause was the Gas fee logic breakdown bug introduced in version 1.72, which led to the network stall. A complete technical incident recap will be published within the next few days.
How long did the Sui mainnet downtime last, and when was the restoration confirmed?
Sui officials confirmed that mainnet activity resumed at around 4:30 a.m. on May 29, 2026. The exact time the downtime began was not disclosed in the current announcement, so the exact downtime duration has not yet been explained by the official.
Was this downtime caused by an external security attack?
Sui officials confirmed that the reason was the Gas fee logic breakdown bug introduced with version 1.72, and the current announcements did not characterize the incident as an external security attack. Sui officials stated that a complete incident recap with more detailed technical analysis will be shared with the community in the coming days.
