CVE-2021-42219

Name: CVE-2021-42219
Creator: NVD / NIST
Published: 2022-03-17T00:15:07.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2021-42219 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Go-Ethereum v1.10.9 was discovered to contain an issue which allows attackers to cause a denial of service (DoS) via sending an excessive amount of messages to a node. This is caused by missing memory in the component /ethash/algorithm.go.. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

Go-Ethereum v1.10.9 was discovered to contain an issue which allows attackers to cause a denial of service (DoS) via sending an excessive amount of messages to a node. This is caused by missing memory in the component /ethash/algorithm.go.

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

1.18%

63.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Ethereum	Go Ethereum	1.10.9

References

https://docs.google.com/document/d/1dYFSpNZPC0OV-n1mMqdc269u9yYU1XQy/edit?usp=sharing&ouid=112110745137218798745&rtpof=true&sd=trueExploit, Third Party Advisory
https://docs.google.com/document/d/1dYFSpNZPC0OV-n1mMqdc269u9yYU1XQy/edit?usp=sharing&ouid=112110745137218798745&rtpof=true&sd=trueExploit, Third Party Advisory

Timeline

Published: Mar 17, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42219?

How severe is CVE-2021-42219?

CVE-2021-42219 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42219?

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-2021-42219?

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

Scan your code now

Source: NVD / NIST