# CVE-2021-42219: Denial of service in go-ethereum

Source: https://junglewise.ai/threats/cve-2021-42219-denial-of-service-in-go-ethereum  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-03-18  
License: CC BY 4.0 with a link back

CVE-2021-42219 · Severity: low · CVSS 3.1 · Published 2022-03-18

Denial of service in go-ethereum

Technologies: [github.com/ethereum/go-ethereum (Go)](https://junglewise.ai/threats/technologies/github-com-ethereum-go-ethereum). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2021-42219 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2021-42219 being exploited in the wild.

**How severe is CVE-2021-42219?** Low severity, with a CVSS score of 3.1, published 18 March 2022.

**Which products and versions are affected?** github.com/ethereum/go-ethereum (Go) SEMVER:introduced=0,last_affected=1.10.9.

**Is there a fix for CVE-2021-42219?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2021-42219?** Check whether you run github.com/ethereum/go-ethereum (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- github.com/ethereum/go-ethereum (Go) SEMVER:introduced=0,last_affected=1.10.9

## Identifiers

- CVE-2021-42219
- GHSA-vrcc-g6vj-mh5w

## Related threats

- [GO-2026-4511 - Go Ethereum Improperly Validates the ECIES Public Key in RLPx Handshake in github.com/ethereum/go-ethereum](https://junglewise.ai/threats/cve-2026-26315-go-ethereum-improperly-validates-the-ecies-public-key-in-rlpx)
- [GO-2026-4507 - Go Ethereum affected by crash via malicious p2p message in github.com/ethereum/go-ethereum](https://junglewise.ai/threats/cve-2026-26314-go-ethereum-affected-by-dos-via-malicious-p2p-message)
- [GO-2026-4508 - Go Ethereum affected by DoS via malicious p2p message in github.com/ethereum/go-ethereum](https://junglewise.ai/threats/cve-2026-26313-go-ethereum-affected-by-dos-via-malicious-p2p-message)
- [GO-2026-4315 - DoS via malicious p2p message affecting a vulnerable node in github.com/ethereum/go-ethereum](https://junglewise.ai/threats/cve-2026-22862-go-ethereum-is-vulnerable-to-dos-via-malicious-p2p-message)
- [GO-2026-4314 - High CPU usage leading to DoS via malicious p2p message in github.com/ethereum/go-ethereum](https://junglewise.ai/threats/cve-2026-22868-go-ethereum-is-vulnerable-to-high-cpu-usage-leading-to-dos-via)