CVE-2025-67604 Denial of service in FortiAnalyzer

Medium 5.2 Published 12 May 2026 Updated 12 May 2026

An authenticated attacker can cause a system hang in FortiAnalyzer and FortiManager by sending multiple specially crafted HTTP requests.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-67604?

CVE-2025-67604 is a medium-severity denial of service vulnerability in Fortinet Fortianalyzer, published on 12 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A use of potentially dangerous function vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 through 7.4.8, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all versions, FortiAnalyzer 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4.0 through 7.4.8, FortiManager 7.2 all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions may allow an authenticated attacker to cause a system hang via multiple specially crafted HTTP requests causing crashes. This happens if internal locks are aligned, which is out of control of the attacker.

Weakness: CWE-676

Which versions are affected by CVE-2025-67604?

It affects 2 products.

Products include Fortinet Fortianalyzer, Fortinet Fortimanager.

How do I fix CVE-2025-67604?

No fix has been published for CVE-2025-67604 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-2025-67604 being exploited?

There is no known exploitation of CVE-2025-67604 in the wild and no public exploit code.

All Fortinet Fortianalyzer vulnerabilities

Sources

Also known as GHSA-c3gv-678x-vgc9.