The South Korean crypto exchange Upbit had temporarily disabled SUI deposits and withdrawals amid the network outage.
Sui, a decentralized layer-1 blockchain designed for rapid smart contract deployment, experienced a significant outage on Nov. 21, halting block production for more than an hour.
The Sui blockchain went down with no blocks being produced for more than an hour, according to data from the Sui Network explorer, SuiVision.
According to the data, the last block occurred at 9:15 am UTC, with no new blocks produced since.
The last three transaction blocks on the Sui blockchain. Source: SuiVision
Multiple industry observers reacted to the downtime, with many outlining Sui’s ambitions to be one of the biggest competitors to Solana SOL$241.52, which is the fourth-largest cryptocurrency by market capitalization.
“SUI blockchain is down. And they claimed to be a Solana Killer,” crypto YouTuber Ajay Kashyap wrote on X.
Exchanges disable SUI deposits and withdrawals amid the outage
The downtime also impacted Sui SUI$3.42, the blockchain’s native cryptocurrency, which fell nearly 11%, according to data from CoinGecko. Still, it was trading at about $3.40 and was still up around 75% over the past 30 days.
SUI 24-hour price chart. Source: CoinGecko
Some major exchanges also reacted to the issue on the Sui blockchain. South Korean crypto exchange Upbit temporarily halted SUI deposits and withdrawals, citing network issues.
The Sui Foundation took to X to announce the outage about two hours following the block production halt, stating that the network is currently experiencing an outage and not processing transactions.
“We’ve identified the issue, and a fix will be deployed shortly,” the foundation noted.
Source: Sui Network
Cointelegraph approached the foundation for a comment regarding the issue but did not receive a response at the time of publication.
A DOS bug behind the outage?
According to some cryptocurrency security firms, the outage on the Sui blockchain was likely due to a DOS bug on its system.
“After our analysis, it was found that the Sui Network node occurred DOS due to integer overflow,” Web3 security company ExVul said in an X post.
The Sui network allegedly experienced a DOS bug. Source: ExVul
ExVul also referred to the alleged bug location on GitHub, suggesting a fix patch code.
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