cvedb.io
CVE-2021-39167
CRITICAL · CVSS 10
EPSS exploitation probability: 0%
Published 2021-08-27T00:15:06.970 · Last modified 2026-06-17T04:03:14.070

Summary

OpenZepplin is a library for smart contract development. In affected versions a vulnerability in TimelockController allowed an actor with the executor role to escalate privileges. Further details about the vulnerability will be disclosed at a later date. As a workaround revoke the executor role from accounts not strictly under the team's control. We recommend revoking all executors that are not also proposers. When applying this mitigation, ensure there is at least one proposer and executor remaining.

Affected products

openzeppelin — contracts

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.