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CVE-2021-42766

nvd nist
Published: Oct 20, 2021Modified: Jun 17, 2026

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9.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Exploitability: 3.9 / Impact: 5.2
Source: NVD

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 (1)

Proof Of Stake Ethereum
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
version ≤ 2021-10-19

References (2)

Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.