CVE-2021-42219: Ethereum Go Ethereum

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

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.

Affected products

• Ethereum Go Ethereum: version 1.10.9 only

Published 2022-03-17. Last modified 2026-06-17.