Privilege escalation in Openzeppelin Contracts
CVE-2021-39167
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 a…
Vulnerability class: Privilege Escalation
EPSS: 0.016 (72.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Openzeppelin Contracts
- Openzeppelin Openzeppelin-contracts — versions >=4.0.0, < 4.3.1, >=3.3.0, < 3.4.2, >= 3.3.0-solc-0.7, < 3.4.2-solc-0.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39167?
- CVE-2021-39167 is a critical-severity vulnerability in Openzeppelin Contracts, classified under Improper Privilege Management. CVSS score: 10.0/10. Published 2021-08-27.
- How severe is CVE-2021-39167?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2021-39167 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.