CVE-2021-42766

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 55%
VendorProductVersion
proof-of-stake_ethereum_projectproof-of-stake_ethereum
𝑥
≤ 2021-10-19
𝑥
= Vulnerable software versions
References
https://arxiv.org/abs/2110.10086
https://arxiv.org/abs/2110.10086