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CVE-2021-42766

CRITICAL CVSS: 9.1 Published: 2021-10-20 Modified: 2026-06-17

Description

The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service (long-range consensus chain reorganizations), even when this adversary has little stake and cannot influence network message propagation. This can cause a protocol stall, or an increase in the profits of individual validators.

Affected Platforms

Proof-Of-Stake Ethereum Project Proof-Of-Stake Ethereum

Weakness Type

NVD-CWE-noinfo

References