High severity7.5NVD Advisory· Published Aug 3, 2021· Updated Jun 17, 2026
CVE-2021-27953
CVE-2021-27953
Description
A NULL pointer dereference vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HomeKit Wireless Access Control setup process. A threat actor can exploit this vulnerability to cause a denial of service, forcing the device to reboot via a crafted HTTP request.
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Affected products
2- ecobee3 lite/ecobee3 litedescription
Patches
Vulnerability mechanics
References
1- www.l9group.com/advisories/remote-denial-of-service-of-ecobee3-litenvdExploitThird Party Advisory
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