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CVE-2021-39167

10.0 CRITICAL

OpenZepplin is a library for smart contract development

Published: 2021-08-27 · Last updated: 2026-06-17

Severity and scoring

CVSS
10.0 CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
CWE-269

Affected products

VendorProduct
openzeppelincontracts

Description

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.

Source: NVD

References

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