CVE-2021-39137

Consensus flaw during block processing in go-ethereum

HIGH
7.5
CVSS Score
Published: August 24, 2021 at 04:05 PM UTC
Updated: June 17, 2026 at 04:03 AM UTC
1 product affected across 1 vendorGo Ethereum

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

go-ethereum is the official Go implementation of the Ethereum protocol. In affected versions a consensus-vulnerability in go-ethereum (Geth) could cause a chain split, where vulnerable versions refuse to accept the canonical chain. Further details about the vulnerability will be disclosed at a later date. A patch is included in the upcoming `v1.10.8` release. No workaround are available.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.10.81.10.0 ≤ v < 1.10.8
Affected range stops below 1.10.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-436

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