DeFi lender proposes bad-debt fix, but user USDC funds remain locked

Lending protocol Moonwell’s proposed rate changes could cut monthly interest accruing on bad debt by about 85%, according to Anthias Labs’ projection. Its Sept. 4 recovery update leaves access to $USDC and a return to borrowing as separate hurdles.

Moonwell said in the update that governance proposal MIP-X66 had entered its vote collection period. The package combines changes to market risk settings, interest-rate models and the use of protocol reserves to recapitalize the $USDC market.

The Sept. 4 announcement described what would happen after execution, without confirming reserve transfers or setting a supplier repayment timetable. MIP-X66’s subsequent execution status and actual $USDC transfers remain unverified.

Moonwell relayed its risk adviser’s estimate that the proposed rate changes across seven Base markets would reduce monthly interest on outstanding bad debt from about $338,785 to $50,273, assuming balances and utilization remain unchanged.

The projected saving is $288,512 a month, or roughly 85%. Governance delegate PGov cited the same dollar reduction in supporting MIP-X66.

Those figures measure slower growth in debt already on the books. They do not measure cash recovered, principal forgiven or money returned to suppliers. Even under the projection, about $50,273 in monthly interest would continue accruing.

The reserve component addresses a different problem. It proposes withdrawing available protocol reserves on Base and OP Mainnet for conversion to $USDC and recapitalization. Moonwell said the withdrawals would apply only to protocol-owned assets, without withdrawing or transferring user funds.

Supplier cash and borrowing remain separate

The recovery effort follows the Aug. 27 MAMO market incident on Base. Anthias’s Aug. 28 post-mortem described inflated collateral accounting combined with oracle-price manipulation and estimated roughly $9.1 million in residual borrower obligations at its Aug. 27 evidence cutoff. That included about 2.35 million $USDC in remaining borrower debt, rather than a current measure of withdrawal liquidity.

A Sept. 4 governance request illustrates the questions facing newer suppliers. Forum user Dr_Bahmani said they deposited a five-figure $USDC position through Mamo on Sept. 2 without a prominent incident-specific warning and subsequently faced effectively unavailable withdrawal liquidity. Those are the depositor’s allegations.

The user asked for separate figures covering market cash, performing and impaired debt, reserves and recoveries, alongside a policy for post-incident deposits and fair withdrawals. The request explicitly did not assert that a compensation program existed or that a final haircut had been determined.

Moonwell also said in its Sept. 4 update that security firm Zero Shadow had been retained to assist recovery efforts, with potential options still being evaluated. The update provided no recovered-cash amount or guarantee of full supplier repayment.

Borrowers face another condition: Moonwell said MIP-X66 could help establish the conditions to consider reopening Base borrowing, but any re-enablement would remain subject to further risk assessment. Execution alone would therefore not amount to an announced borrowing restart.