CVE-2025-66676 Denial of service in n/a

Medium 6.2 Published 13 Feb 2026 Updated 13 Feb 2026

Attackers can cause a Denial of Service in IObit Unlocker via a crafted request, affecting users of this desktop utility.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-66676?

CVE-2025-66676 is a medium-severity denial of service vulnerability in n/a, published on 13 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue in IObit Unlocker v1.3.0.11 allows attackers to cause a Denial of Service (DoS) via a crafted request.

Weakness: CWE-400

Which versions are affected by CVE-2025-66676?

It affects 1 product.

Products include Iobit Iobit Unlocker.

How do I fix CVE-2025-66676?

No fix has been published for CVE-2025-66676 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-66676 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66676 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-224f-wm46-5p4r.