CVEvulnerability
CVE-2021-27952
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-08-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-798
Description
Hardcoded default root credentials exist on the ecobee3 lite 4.5.81.200 device. This allows a threat actor to gain access to the password-protected bootloader environment through the serial console.
Affected configurations
• ecobee ecobee3 lite firmware 4.5.81.200
Related
Weakness · CWE (1)
- CWE-798 Use of Hard-coded Credentials weakness
References
- https://www.l9group.com/advisories/hard-coded-default-root-credentials-for-all-ecobee3-lite-devices Exploit, Third Party Advisory
- https://www.l9group.com/advisories/hard-coded-default-root-credentials-for-all-ecobee3-lite-devices Exploit, Third Party Advisory