CVE-2021-27952 Hardcoded credentials in n/a

Critical 9.8 Published Updated

Hardcoded root credentials allow attackers to access the bootloader via serial console, enabling privilege escalation and potential code execution on ecobee3 lite devices.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-27952?

CVE-2021-27952 is a critical vulnerability in n/a, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-798

Which versions are affected by CVE-2021-27952?

It affects 1 product.

Products include Ecobee Ecobee3 Lite Firmware.

How do I fix CVE-2021-27952?

No fix has been published for CVE-2021-27952 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-27952 being exploited?

There is no known exploitation of CVE-2021-27952 in the wild and no public exploit code.

Sources

Also known as GHSA-3xpf-gg8x-9h3c.

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