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Radix stories

Sep 18, 2026

Radix blockchain halted for 10 days after $1.3 million exploit from 3-year-old bug

A vault flaw created during a routine code refactor three years ago enabled a $1.3 million theft on the Radix blockchain, forcing validators to halt the network for 10 days. The Radix Foundation disclosed the incident on September 17.

Sep 18, 2026·1 source

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Top claims

▪The protocol fix deployed by developers after the August 31, 2026 exploit added checks that prevent restricted vault references from being used for ordinary withdrawals on the Radix network
▪The 10-day Radix blockchain halt triggered by the August 31, 2026 exploit ended and user transactions resumed on September 11, 2026, after developers deployed a protocol fix
▪An attacker who exploited a vault authorization vulnerability introduced into the Radix Engine during a June 2023 code refactor executed 26 transactions on August 31, 2026, withdrawing approximately 458,915 USDC, 72,420 USDT, 61.08 ETH, 6.35 wrapped Bitcoin, 536.16 SOL, 32.91 BNB, and 13,000 XRD

Topics

Layer 1s Blockchain governance Smart contract vulnerabilities