CVE-2020-27891: Ti Z-Stack

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 does not properly process a ZCL Read Reporting Configuration Response message. It crashes in zclHandleExternal().

Affected products

• Ti Z-Stack: version 3.0.1 only

Published 2020-10-27. Last modified 2026-06-17.