How severe is CVE-2021-4432?

CVE-2021-4432 has a CVSS 3.x base score of 5.3, rated medium 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 low.

Is CVE-2021-4432 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4432?

CVE-2021-4432 affects Pcman Ftp Server Project Pcman Ftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4432?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2021-4432 have an EU (EUVD) identifier?

Yes. CVE-2021-4432 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34259.

When was CVE-2021-4432 published?

CVE-2021-4432 was published on 2024-01-16 and last updated on 2026-06-17.

CVE-2021-4432

CVE-2021-4432 is a medium-severity vulnerability in Pcman Ftp Server Project Pcman Ftp Server with a CVSS 3.x base score of 5.3. 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-34259
Weakness: CWE-404
Affected product: Pcman Ftp Server Project Pcman Ftp Server
Published: 2024-01-16
Last modified: 2026-06-17

Description

A vulnerability was found in PCMan FTP Server 2.0.7. It has been classified as problematic. This affects an unknown part of the component USER Command Handler. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-250719.

Frequently asked questions

What is CVE-2021-4432?: A vulnerability was found in PCMan FTP Server 2.0.7. It has been classified as problematic. This affects an unknown part of the component USER Command Handler. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-250719.
How severe is CVE-2021-4432?: CVE-2021-4432 has a CVSS 3.x base score of 5.3, rated medium 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 low.
Is CVE-2021-4432 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4432?: CVE-2021-4432 affects Pcman Ftp Server Project Pcman Ftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4432?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-4432 have an EU (EUVD) identifier?: Yes. CVE-2021-4432 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34259.
When was CVE-2021-4432 published?: CVE-2021-4432 was published on 2024-01-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pcman_ftp_server_project:pcman_ftp_server:2.0.7:*:*:*:*:*:*:*

More vulnerabilities in Pcman Ftp Server Project Pcman Ftp Server

CVE-2018-18861 — Critical (CVSS 9.8): Buffer overflow in PCMan FTP Server 2.0.7 allows for remote code execution via the APPE command.
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