CVE-2018-12454

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

The _addguess function of a simplelottery smart contract implementation for 1000 Guess, an Ethereum gambling game, generates a random value with publicly readable variables such as the current block information and a private variable (which can be read with a getStorageAt call). Therefore, it allows attackers to always win and get rewards.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jun 17, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2018-12454: High severity, CVSS 7.5 | Vulnix