CVE-2021-42766 - CVE House
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Status published Critical CVE-2021-42766

The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2021-42765
The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an...
High 7.5
CVE-2021-42764
The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an...
Critical 9.1

Affected Vendor

proof-of-stake ethereum project

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Affected Software

proof-of-stake ethereum
Vulnerable Versions:
0

Timeline

Official Publish: October 20th, 2021
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.