CVE-2021-34273: b2x Project b2x

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A security flaw in the 'owned' function of a smart contract implementation for BTC2X (B2X), a tradeable Ethereum ERC20 token, allows attackers to hijack victim accounts and arbitrarily increase the digital supply of assets.

Affected products

• b2x Project b2x: affected versions not specified

Published 2021-08-03. Last modified 2026-06-17.