Aave's Lending Markets Reach Critical 100% Utilization, Sparking Concerns

Decentralized lending giant Aave has effectively come to a standstill after its primary lending protocols exhausted their available funds, rendering users unable to access billions of dollars in cryptocurrency. According to DeFi Warhold, this phenomenon, known as 100% utilization, signifies a critical lack of liquidity, preventing withdrawals and liquidations from being processed. Approximately $5 billion in stablecoins, including USDT and USDC, are currently locked within the protocol, which is unable to provide these assets due to the absence of liquidity. The crisis unfolded on April 18, following a $292 million exploit of the Kelp DAO rsETH bridge, where an attacker utilized forged cross-chain messages to mint unbacked rsETH, subsequently depositing it into Aave as collateral to borrow nearly $200 million in WETH. As news of the 'bad debt' spread, a bank-run scenario ensued, resulting in a total of $6.6 billion exiting the protocol within a 24-hour period. Aave founder Stani Kulechov declined to comment on the situation, stating he had 'nothing useful to say.' DeFi Warhold emphasized that 100% utilization across all markets simultaneously is akin to a complete halt, implying no available liquidity for withdrawals and an inability to process liquidations, leaving $3 billion in USDT and $2 billion in USDC 'stuck with no clean exit.' Furthermore, the analyst warned that if prices fluctuate, the compounded bad debt will have no mechanism for coverage, placing the protocol in the worst possible situation due to its inability to protect itself against additional bad debt without liquidations. Natalie Newson, a senior blockchain security researcher at CertiK, concurred that Aave is in severe trouble, highlighting that 100% utilization not only signifies a lack of liquidity but also indicates that the protocol's self-defense mechanisms are inoperable. Newson explained that liquidations require liquidity to function; without it, undercollateralized positions cannot be closed, and bad debt continues to accumulate, leaving the protocol in an irrecoverable situation without external assistance. Aave's risk framework had anticipated the scenario of 100% utilization, with former Aave Risk Manager Alex Bertomeu-Gilles noting in 2020 that at this level, 'no liquidity is left,' and the situation becomes 'problematic' as depositors are unable to withdraw their funds. Technical analyst Duo Nine was the first to point out that Aave had reached 100% utilization, noting that following the rsETH exploit and the incurring of bad debt, significant withdrawals by whales like Justin Sun and the MEXC exchange led to the ETH market hitting 100% utilization, soon followed by the USDT and USDC pools as over $6 billion in assets left the protocol within hours.