Hack history / 2025 / Hack or exploit
Usual USD0
Hack or exploit on May 27, 2025 · Missing Input Validation
ATTACK TX CONFIRMED ON CHAINSOURCES AGREE ON DATE AND LOSS · 3 SOURCES
Lost
$43K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,961
among thefts by dollars lost
What happened
Usual USD0++ Investment vault lost $43K on May 27, 2025 via an arbitrage exploit. Attacker abused a capped unwrapping mechanism lacking proper validation while depositing into the fund; no user funds were affected.
Details
- Date
- May 27, 2025
- Kind
- Hack or exploit
- Method
- Missing Input Validation
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum
Reported by
Related incidents
Usual 2024 · Hack or exploit · undisclosed
Silo Finance 2025 · Hack or exploit · $546K
Cozy V2 2025 · Hack or exploit · $427K
Silo Finance 2025 · Hack or exploit · $546K
Cozy V2 2025 · Hack or exploit · $427K
Cite this page
SwanBluechip, "Usual USD0 hack, May 27, 2025: $43K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htf957597ad2/ (data as of 2026-10-31).