7.5

CVE-2020-26240: ethereum go_ethereum Incorrect Calculation

CVSS: 7.5v3.1HighModified
AliasesGHSA-v592-xf75-856pGO-2022-0775
Published 25-11-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-26240 is a high (CVSS 7.5) Incorrect Calculation vulnerability in ethereum go_ethereum. EPSS estimates a 1.86% chance of exploitation in the next 30 days, higher than 78.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.86%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2025:15424-1

Timeline

  1. 25-11-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 could cause miners to erroneously calculate PoW in an upcoming epoch (estimated early January, 2021). This happened on the ETC chain on 2020-11-06. This issue is relevant only for miners, non-mining nodes are unaffected. This issue is fixed as of 1.9.24

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.86%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.86% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.86%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ethereum2 products
Github.com/ethereum1 product
  • go-ethereum< 1.9.24

2 vendors · 3 products

References

7 links