What’s Vulnerable › Vulnerabilities

CVE-2018-13563

• Severity: high (CVSS 7.5 v3.0)
• 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: 2018-07-09 · updated 2026-06-17
• Weakness: CWE-190

Description

The mintToken function of a smart contract implementation for UPayToken, an Ethereum token, has an integer overflow that allows the owner of the contract to set the balance of an arbitrary user to any value.

Affected products

• Upaytoken Project Upaytoken: all versions

References

• https://github.com/BlockChainsSecurity/EtherTokens/blob/master/GEMCHAIN/mint%20integer%20overflow.md
• https://github.com/BlockChainsSecurity/EtherTokens/tree/master/UPayToken
• https://github.com/BlockChainsSecurity/EtherTokens/blob/master/GEMCHAIN/mint%20integer%20overflow.md
• https://github.com/BlockChainsSecurity/EtherTokens/tree/master/UPayToken

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