{"cve":"CVE-2021-33403","nvd":{"published":"2021-08-03T22:15:09.170","modified":"2026-06-17T03:54:32.267","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-190"],"references":["https://cn.etherscan.com/address/0x63e634330a20150dbb61b15648bc73855d6ccf07#code","https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/LNCToken.md","https://cn.etherscan.com/address/0x63e634330a20150dbb61b15648bc73855d6ccf07#code","https://github.com/MRdoulestar/SC-RCVD/blob/main/Vulnerabilities/LNCToken.md"],"products":["blocklancertoken_project:blocklancertoken"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-33403","score":0.01196,"percentile":0.68099,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}