CVE-2020-24837

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An integer underflow has been found in the latest version of ZCFees. The variables 'currPeriodIdx' and 'lastPeriodExecIdx' are both unsigned integers, and the result of the minus operation may be a negative integer which leads to an underflow. The attackers can modify the current timestamp of the transaction somehow and block the execution of the process function.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-191

Affected software

No affected versions have been published.

Timeline

Published: Feb 10, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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