CVE-2021-33889: Openthread Wpantund

Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days.

OpenThread wpantund through 2021-07-02 has a stack-based Buffer Overflow because of an inconsistency in the integer data type for metric_len.

Affected products

• Openthread Wpantund: up to and including 2021-07-02

Published 2021-07-02. Last modified 2026-06-17.