VULNERABILITY INTELLIGENCE

CVE-2021-43839

CVSS score7.5 HIGH
EPSS probability1.36%
CISA KEVNot currently listed
Published2021-12-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-670
  • nvd@nist.gov: CWE-670

Primary references