Read the docs
TI-2021-03288 Aliases CVE-2021-4432GHSA-v462-3xw3-jqx3

PCMan FTP Server USER Command denial of service

Priority HIGH 66CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-404.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01331 71st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PCManFTP Server2.0.7—No fix listedCNA
  • FTP Server VendorPCMan Affected 2.0.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pcman:ftp_server:2.0.7:*:*:*:*:*:*:*2.0.7VulnerablePCMan
  • cpe:2.3:a:pcman:ftp_server:2.0.7:*:*:*:*:*:*:* Versions 2.0.7 Vulnerable ·PCMan

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4432
  2. 2026-10-03 Alias added: GHSA-v462-3xw3-jqx3

References

Exploit 2

  • TI-2013-04151 Buffer overflow in PCMan's FTP Server 2.0.7 allows remote attackers to execute arbitrary… CVSS 2.0HIGH 10.0
  • TI-2024-00672 PCMan FTP Server STOR Command denial of service CVSS 3.1HIGH 7.5
  • TI-2024-00671 PCMan FTP Server PUT Command denial of service CVSS 3.1HIGH 7.5
  • TI-2025-04786 PCMan FTP Server NLST Command buffer overflow CVSS 4.0MEDIUM 6.9
  • TI-2025-04363 PCMan FTP Server REST Command buffer overflow CVSS 4.0MEDIUM 6.9
  • TI-2025-03719 PCMan FTP Server QUOTE Command buffer overflow CVSS 4.0MEDIUM 6.9
See all 58 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences