CVE-2020-26264 - CVE House
Back to Database
Status published Medium CVE-2020-26264

LES Server DoS via GetProofsV2

Vulnerability Description

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth before version 1.9.25 a denial-of-service vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client. This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit. The vulnerability was patched in version 1.9.25.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

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

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-26264

Credits & Attribution

No credits recorded in the NVD database.

References

More from ethereum

View All →
CVE-2025-24883
go-ethereum has a DoS via malicious p2p message
High 8.7
CVE-2024-32972
go-ethereum denial of service via malicious p2p message
High 7.5
CVE-2023-40591
Denial of service via malicious p2p message in go-ethereum
High 7.5
CVE-2022-37450
Go Ethereum (aka geth) through 1.10.21 allows attackers to increase...
Medium 5.9
CVE-2022-29177
DoS via malicious p2p message in Go-Ethereum
Medium 5.9

Affected Vendor

Affected Software

go-ethereum
Vulnerable Versions:
< 1.9.25

Timeline

Official Publish: December 11th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)

CWE-400

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service
Impact
T1498 Network Denial of Service
Impact