CVE-2021-33403

Published: Aug 3, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

An integer overflow in the transfer function of a smart contract implementation for Lancer Token, an Ethereum ERC20 token, allows the owner to cause unexpected financial losses between two large accounts during a transaction.

Affected (1)

Products: Blocklancertoken Project: Blocklancertoken

Blocklancertoken Project

1 product

Blocklancertoken

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Blocklancertoken Project Blocklancertoken	All versions

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (4)

https://cn.etherscan.com/address/0x63e634330a20150dbb61b15648bc73855d6ccf07#code

Source: cve@mitre.org

ExploitThird Party Advisory

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

Source: cve@mitre.org

ExploitThird Party Advisory

https://cn.etherscan.com/address/0x63e634330a20150dbb61b15648bc73855d6ccf07#code

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.