NULL pointer dereference in Ecobee Ecobee3 Lite
CVE-2021-27953
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Ecobee Ecobee3 Lite
- Ecobee Ecobee3 Lite Firmware — versions 4.5.81.200
Weakness classification (CWE)
References
- www.l9group.com/advisories/remote-denial-of-service-of-ecobee3-lite (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27953?
- CVE-2021-27953 is a high-severity vulnerability in Ecobee Ecobee3 Lite, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2021-08-03.
- How severe is CVE-2021-27953?
- High severity. CVSS v3 base score is 7.5 out of 10.