Sui Outages Cause 15-Hour Downtime, SUI Drops 18%
Sui mainnet suffered three outages totaling over 15 hours on May 28-29 due to gas charge logic bugs and a validator state glitch. SUI price fell 18% despite no fund loss or reverted transactions. Interim fix applied, but reliability concerns linger.
Quick Take
Sui mainnet down over 15 hours across three outages on May 28-29.
Gas logic conflicts from release 1.72 caused the first two crashes.
Third outage triggered by validator randomness bug during epoch change.
SUI price dropped 18% in seven days amid reliability fears.
Market Impact Analysis
BearishNetwork outages undermine confidence in Sui's reliability, contributing to a significant price drop; ongoing technical risks and the acknowledged interim fix heighten uncertainty.
Speculation Analysis
Key Takeaways
- Sui mainnet was down for over 15 hours across three separate outages on May 28-29.
- Gas charging logic conflicts with the new 1.72 release triggered the first two crashes.
- A latent validator randomness bug caused the third outage during an epoch change.
- SUI price fell 18% to $0.86 in seven days as reliability fears mounted.
- No user funds were lost, and committed transactions remained intact.
What Happened
Sui’s mainnet froze three times in 48 hours, racking up over 15 hours of downtime. The chain went dark on May 28-29, halting all transaction processing. Validators stopped agreeing on the state, but the Sui Foundation confirmed no user funds were at risk and no executed transactions reversed. An interim patch got the network running again, though engineers admitted accepting heightened risk for speed. The outages mark Sui’s third major reliability event since its 2023 launch, rattling confidence in the layer-1 blockchain.
The Numbers
SUI plunged 18% over seven days, trading at $0.86 on Monday. The first two outages stemmed from a crash bug in release 1.72’s new address balance feature, conflicting with existing gas calculations. The third struck during a scheduled epoch change, triggered by a bug in how validators preserve randomness state. All three incidents disrupted the network for a combined 15+ hours, spreading across a 48-hour window. This is Sui’s longest cumulative downtime since inception.
Why It Happened
Developers traced the first two crashes to a gas charging logic error introduced in the 1.72 upgrade. New address balance checks clashed with legacy gas calculation routines, causing validators to halt. The third outage resulted from a separate, dormant bug: validators failed to correctly save their randomness state between restarts, leading to synchronization failures during the epoch transition. These issues highlight the complexity of maintaining state safety across protocol upgrades in production.
Broader Impact
Sui’s reliability wobble isn’t isolated. It’s the network’s third serious failure, following a two-hour bug in November 2024 and a six-hour consensus split in January 2026. The patch cycle—rushed fix now, robust solution later—mirrors a broader industry tension between speed and stability. With SUI down double digits, the market is repricing the risk of infrastructure fragility in high-throughput chains. These outages serve as a cautionary tale for layer-1 projects scaling fast.
What to Watch Next
- Sui’s testnet pushing transactions: Does the interim fix hold under load? Mark June 1 stress tests.
- The Sui Foundation’s call for developer reviews: Look for a post-mortem detailing the robust solution timeline.
- SUI’s price action: Can it reclaim $1 if Bitcoin stabilizes, or will outflows persist?
This article is for informational purposes only and does not constitute financial advice.
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