CVE-2021-27953

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.26% Top 25%
Third-Party Advisory l9group.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.l9group.com/advisories/remote-denial-of-service-of-ecobee3-lite third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-27953?
CVE-2021-27953 has been scored as a high severity vulnerability.
How to fix CVE-2021-27953?
To fix CVE-2021-27953, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27953 being actively exploited in the wild?
It is possible that CVE-2021-27953 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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