CVE-2020-26264

MEDIUM EPSS 76.6%
Published Dec 11, 20205y ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Dec 11, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
76.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
ethereumgo_ethereum* <1.9.25

References 4

  • github.com https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46
    PatchThird Party Advisory
  • github.com https://github.com/ethereum/go-ethereum/pull/21896
    PatchThird Party Advisory
  • github.com https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25
    Third Party Advisory
  • github.com https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q
    Third Party Advisory

Remediation

  • github.com https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46
    PatchThird Party Advisory
  • github.com https://github.com/ethereum/go-ethereum/pull/21896
    PatchThird Party Advisory