CVE-2021-47791 SmartFTP Client 10.0.2909.0 - 'Multiple' Denial of Service
Attackers can crash the SmartFTP Client application by providing malformed paths, invalid IP addresses, or clearing connection history.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47791?
CVE-2021-47791 is a medium-severity denial of service vulnerability in SmartFTP Client, published on 15 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
SmartFTP Client 10.0.2909.0 contains multiple denial of service vulnerabilities that allow attackers to crash the application through specific input manipulation. Attackers can trigger crashes by entering malformed paths, using invalid IP addresses, or clearing connection history in the client's interface.
Weakness: CWE-770
Which versions are affected by CVE-2021-47791?
It affects 1 product.
Products include Smartftp Smartftp.
How do I fix CVE-2021-47791?
No fix has been published for CVE-2021-47791 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-2021-47791 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47791 exists.
Other vulnerabilities in SmartFTP Client
Sources
Also known as GHSA-rx63-hxw9-f88f.