CVE-2020-37067 Filetto 1.0 - 'FEAT' Denial of Service
Attackers can crash the Filetto FTP server by sending an oversized FEAT command, causing a denial of service.
- 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-2020-37067?
CVE-2020-37067 is a high-severity denial of service vulnerability in Utillyty Filetto, published on 3 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Filetto 1.0 FTP server contains a denial of service vulnerability in the FEAT command processing that allows attackers to crash the service. Attackers can send an oversized FEAT command with 11,008 bytes of repeated characters to trigger a buffer overflow and terminate the FTP service.
Weakness: CWE-770
Which versions are affected by CVE-2020-37067?
How do I fix CVE-2020-37067?
No fix has been published for CVE-2020-37067 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-2020-37067 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37067 exists.
Sources
Also known as GHSA-867q-8rpr-vpph.