CVE-2020-7508 Auth bypass in Easergy T300 (Firmware version 1.5.2 and older)

Critical 9.8 Published 16 Jun 2020 Updated 4 Aug 2024

An attacker can gain full access to the Easergy T300 device by brute-forcing authentication due to missing rate limiting.

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-2020-7508?

CVE-2020-7508 is a critical authentication bypass vulnerability in Easergy T300 (Firmware version 1.5.2 and older), published on 16 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A CWE-307 Improper Restriction of Excessive Authentication Attempts vulnerability exists in Easergy T300 (Firmware version 1.5.2 and older) which could allow an attacker to gain full access by brute force.

Weakness: CWE-307

Which versions are affected by CVE-2020-7508?

It affects 1 product.

Products include Schneider-Electric Easergy T300 Firmware.

How do I fix CVE-2020-7508?

No fix has been published for CVE-2020-7508 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2020-7508 being exploited?

There is no known exploitation of CVE-2020-7508 in the wild and no public exploit code.

Sources

Also known as GHSA-gh5v-6gqh-936p.