CVE-2021-42766
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductProof-of-stake Ethereum
PublishedOct 20, 2021
First seenOct 20, 2021
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| proof-of-stake_ethereum_project proof-of-stake_ethereum | v ≤ 2021-10-19 | — |
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