CVE-2021-27954

HighCVSS 8.2/10Last modified Jun 17, 2026

Description

A heap-based buffer overflow vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HKProcessConfig function of the HomeKit Wireless Access Control setup process. A threat actor can exploit this vulnerability to force the device to connect to a SSID or cause a denial of service.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weakness enumeration

CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Aug 3, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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