CVE-2025-42921 Security feature bypass in Toolbox App

Medium 4.2 Published 17 Apr 2025 Updated 17 Apr 2025

Missing SSH host key verification in JetBrains Toolbox App allows attackers to bypass security checks and potentially intercept connections.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-42921?

CVE-2025-42921 is a medium-severity vulnerability in JetBrains Toolbox App, published on 17 Apr 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In JetBrains Toolbox App before 2.6 host key verification was missing in SSH plugin

Weakness: CWE-297

Which versions are affected by CVE-2025-42921?

It affects 1 product.

Products include Jetbrains Toolbox.

How do I fix CVE-2025-42921?

No fix has been published for CVE-2025-42921 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-42921 being exploited?

There is no known exploitation of CVE-2025-42921 in the wild and no public exploit code.

Sources

Also known as GHSA-32gj-564x-3982.