CVE-2025-27939 Growatt Cloud portal Authorization Bypass Through User-Controlled Key

Medium 6.9 Published 15 Apr 2025 Updated 16 Apr 2025

An attacker can bypass authorization to change other users' email addresses and take over arbitrary accounts in the Growatt Cloud portal.

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-2025-27939?

CVE-2025-27939 is a medium-severity authentication bypass vulnerability in Growatt Cloud portal, published on 15 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An attacker can change registered email addresses of other users and take over arbitrary accounts.

Weakness: CWE-639

Which versions are affected by CVE-2025-27939?

It affects 1 product.

Products include Growatt Cloud Portal.

How do I fix CVE-2025-27939?

No fix has been published for CVE-2025-27939 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-2025-27939 being exploited?

There is no known exploitation of CVE-2025-27939 in the wild and no public exploit code.

Sources

Also known as GHSA-w6fv-xq82-cg7x.