CVE-2021-43839

—

CVSS 3.1

7.5 high

EPSS

1%p69

Published

Dec 21, 2021 (Dec 21, 2021)

Modified

Jun 17, 2026

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.

Vendors: crypto
Products: cronos, ethermint, evmos
Weakness: CWE-670
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (1.3%)

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