How severe is CVE-2021-47791?

CVE-2021-47791 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-47791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47791?

CVE-2021-47791 affects Smartftp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-47791?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2021-47791 have an EU (EUVD) identifier?

Yes. CVE-2021-47791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3002.

When was CVE-2021-47791 published?

CVE-2021-47791 was published on 2026-01-16 and last updated on 2026-06-17.

CVE-2021-47791

CVE-2021-47791 is a high-severity vulnerability in Smartftp with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 4.6
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3002
Weakness: CWE-770
Affected product: Smartftp
Published: 2026-01-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-47791?: CVE-2021-47791 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-47791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47791?: CVE-2021-47791 affects Smartftp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-47791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-47791 have an EU (EUVD) identifier?: Yes. CVE-2021-47791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3002.
When was CVE-2021-47791 published?: CVE-2021-47791 was published on 2026-01-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:smartftp:smartftp:10.0.2909.0:*:*:*:*:*:*:*

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