CVE-2020-20178

Name: CVE-2020-20178
Creator: NVD / NIST
Published: 2021-05-24T19:15:07.383+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.09%

Last modified Jun 17, 2026

CVE-2020-20178 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Ethereum 0xe933c0cd9784414d5f278c114904f5a84b396919#code.sol latest version is affected by a denial of service vulnerability in the affected payout function. Once the length of this array is too long, it will result in an exception. EPSS estimates a 1.09% chance of exploitation in the next 30 days.

Description

Ethereum 0xe933c0cd9784414d5f278c114904f5a84b396919#code.sol latest version is affected by a denial of service vulnerability in the affected payout function. Once the length of this array is too long, it will result in an exception. Attackers can make attacks by creating a series of account addresses.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.09%

61.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Whohas Project	Whohas	All versions

References

https://etherscan.io/address/0xe933c0cd9784414d5f278c114904f5a84b396919Vendor Advisory
https://etherscan.io/address/0xe933c0cd9784414d5f278c114904f5a84b396919Vendor Advisory

Timeline

Published: May 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-20178?

How severe is CVE-2020-20178?

CVE-2020-20178 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.09% probability of exploitation in the next 30 days.

How do I fix CVE-2020-20178?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-20178?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST