CVE-2021-34273

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-08-03 · updated 2026-06-17

Description

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: all versions

References

https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/BTC2X.md
https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/BTC2X.md

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