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Case File

CVE-2021-27954

HIGH · CVSS 8.2 EPSS 0.94% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-03 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.2. Public exploit code or proof-of-concept references have been detected in its references. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-27954
Severity
HIGH
CVSS
8.2
EPSS
0.94%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)