What is CVE-2021-47791?

CVE-2021-47791 is a high-severity vulnerability in Smartftp Client, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-15.

How severe is CVE-2021-47791?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Smartftp Client

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…

EPSS: 0.000 (11.1th percentile) — read the EPSS interpretation.

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.

Affected products

Smartftp Client — versions 10.0.2909.0 (32 and 64 bit)

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

ExploitDB-50266 (exploit)
SmartFTP Official Homepage (product)
SmartFTP Download Page (product)
VulnCheck Advisory: SmartFTP Client 10.0.2909.0 - 'Multiple' Denial of Service (third-party-advisory)

Frequently asked questions

What is CVE-2021-47791?: CVE-2021-47791 is a high-severity vulnerability in Smartftp Client, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-15.
How severe is CVE-2021-47791?: High severity. CVSS v3 base score is 7.5 out of 10.