Ronin Bridge Exploit of $10 Million Caused by Faulty Upgrade Script — Verichains

user avatar

by Giorgi Kostiuk

2 years ago

Made with AI

  1. Cause of the Vulnerability
  2. How the Attack Happened
  3. Consequences and Resolution


    4. The $10 million Ronin bridge exploit on August 6 was caused by a faulty upgrade deployment script, according to blockchain security firm Verichains.

    Cause of the Vulnerability

    The upgrade reduced the voting threshold for validators to zero, allowing any user to withdraw from the bridge without a signature. Verichains states that the error occurred due to the incorrect initialization of the totalWeight variable.

    How the Attack Happened

    The attacker attempted to exploit this flaw but was front-run by an MEV bot, which actually carried out the attack, probably unintentionally. The bot’s owner later returned most of the funds to the Ronin team.

    Consequences and Resolution

    Verichains’ analysis reveals the risks of interacting with upgradeable smart contracts. The network could have lost the full amount had the attacker paid more in gas and thus avoided the front-run.

    Due to the faulty upgrade script, Ronin bridge users were able to withdraw funds without validator signatures. This incident highlights the potential risks when dealing with upgradeable smart contracts.

Tier I

Sector: #18291

Sealed Hiding Place Room

Resource Cache

Resource Cache

Tier I

Requires 25% Tier Progress to Claim
Meme Cache

Meme Cache

Tier I

Requires 50% Tier Progress to Claim
Equipment Cache

Equipment Cache

Tier I

Requires 75% Tier Progress to Claim

After collecting, hiding places will be stored in your inventory and can be opened with Keys.

Other news

Circle Plans Acquisition of Tazapay to Enhance Payment Solutions

Circle plans to acquire Tazapay to enhance cross-border payment solutions, with completion expected in 2027.

user avatarDavid Robinson

Circle's Financial Performance Shows Growth Amidst Changing Market Dynamics

Circle's financial performance shows growth with a net income of 226 million and adjusted EBITDA rising by 85% to 317 million.

user avatarArif Mukhtar

BVNK Launches Open USD for Eligible Business Customers

BVNK has launched Open USD (OUSD) for eligible business customers, allowing them to mint, redeem, hold, and transfer OUSD across multiple blockchain networks.

user avatarLuis Flores

Circle Reports Significant Growth in USDC Onchain Transaction Volume

Circle reports a 49% year-over-year increase in USDC onchain transaction volume for Q3 2026, reaching 139 trillion.

user avatarMaria Gutierrez

Cipher Digital Advances Colchis Project with Conditional Baseload Classification

Cipher Digital reports conditional baseload classification for its 1-gigawatt Colchis project and is developing pipelines for future expansion.

user avatarAndrew Smith

Cipher Digital Achieves First HPC Lease Revenue and Extends Barber Lake Lease

Cipher Digital has recognized its first HPC lease revenue in Q3 2026 and extended its Barber Lake lease to 20 years, increasing contracted revenue to $91 billion.

user avatarJacob Williams

Important disclaimer: The information presented on the Dapp.Expert portal is intended solely for informational purposes and does not constitute an investment recommendation or a guide to action in the field of cryptocurrencies. The Dapp.Expert team is not responsible for any potential losses or missed profits associated with the use of materials published on the site. Before making investment decisions in cryptocurrencies, we recommend consulting a qualified financial advisor.