{"cve":"CVE-2021-42219","nvd":{"published":"2022-03-17T00:15:07.813","modified":"2026-06-17T04:09:29.023","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://docs.google.com/document/d/1dYFSpNZPC0OV-n1mMqdc269u9yYU1XQy/edit?usp=sharing&ouid=112110745137218798745&rtpof=true&sd=true","https://docs.google.com/document/d/1dYFSpNZPC0OV-n1mMqdc269u9yYU1XQy/edit?usp=sharing&ouid=112110745137218798745&rtpof=true&sd=true"],"products":["ethereum:go_ethereum"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-42219","score":0.01197,"percentile":0.68107,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vrcc-g6vj-mh5w","url":"https://osv.dev/vulnerability/GHSA-vrcc-g6vj-mh5w","summary":"Denial of service in go-ethereum","modified":"2023-11-08T04:07:05.160401Z","packages":[{"ecosystem":"Go","name":"github.com/ethereum/go-ethereum","purl":"pkg:golang/github.com/ethereum/go-ethereum","ranges":["<=1.10.9"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}