Resource exhaustion in Smartftp
CVE-2021-47791
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: -0.000
Affected products
- Smartftp — versions 10.0.2909.0
- Smartftp Client — versions 10.0.2909.0 (32 and 64 bit)
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/50266 (Exploit, exploit)
- www.smartftp.com/en-us/ (Product, product)
- www.smartftp.com/en-us/download (Product, product)
- www.vulncheck.com/advisories/smartftp-client-multiple-denial-of-service (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47791?
- CVE-2021-47791 is a high-severity vulnerability in Smartftp, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-16.
- How severe is CVE-2021-47791?
- High severity. CVSS v3 base score is 7.5 out of 10.