CVE-2025-64446 Fortinet FortiWeb: file path flaw
In plain words: The program can be tricked into reading or writing files outside the folder it should stay in. Leaks files such as passwords and settings, or overwrites important ones.
Confirmed exploited by CISA on · US federal patch deadline Nov 21, 2025
What to do
- Install Fortinet's security update for FortiWeb. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- Fortinet FortiWeb Path Traversal Vulnerability
- Product
- Fortinet FortiWeb
- CISA description
- Fortinet FortiWeb contains a relative path traversal vulnerability that may allow an unauthenticated attacker to execute administrative commands on the system via crafted HTTP or HTTPS requests.
- Type of flaw
- File path flaw (CWE-23)
- Confirmed exploited
- Nov 14, 2025
- US federal patch deadline
- Nov 21, 2025
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Answering about CVE-2025-64446 ·
Questions about CVE-2025-64446
Is CVE-2025-64446 being exploited?
Yes. CISA added CVE-2025-64446 to its Known Exploited Vulnerabilities catalog on Nov 14, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-64446?
Install Fortinet's security update for FortiWeb. If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2025-64446?
Only if you use Fortinet FortiWeb. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.