AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-43839

HIGH · CVSS 7.5 EPSS 1.31% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-21 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-43839
Severity
HIGH
CVSS
7.5
EPSS
1.31%

Original NVD Description

Cronos is a commercial implementation of a blockchain. In Cronos nodes running versions before v0.6.5, it is possible to take transaction fees from Cosmos SDK's FeeCollector for the current block by sending a custom crafted MsgEthereumTx. This problem has been patched in Cronos v0.6.5. There are no tested workarounds. All validator node operators are recommended to upgrade to Cronos v0.6.5 at their earliest possible convenience.

Related CVEs

Other vulnerabilities affecting the same vendor(s)