Buffer Overflow Vulnerability in PCMan FTP Server by PCMan
CVE-2025-4253

6.9MEDIUM

Key Information:

Vendor: Pcman
Status: Ftp Server
Vendor: CVE Published:; 4 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-4253?

A buffer overflow vulnerability exists in the HASH Command Handler component of PCMan FTP Server 2.0.7. This flaw allows remote attackers to manipulate specific functionalities, potentially leading to unauthorized access or system compromise. The vulnerability has been publicly disclosed and could be exploited, posing significant risk to users of the affected product.

Affected Version(s)

FTP Server 2.0.7

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-4253 - Proof of Concept

References

https://vuldb.com/?id.307357

vdb-entry

https://vuldb.com/?ctiid.307357

signaturepermissions-required

https://vuldb.com/?submit.561609

third-party-advisory

CVSS V4

Score:

6.9

Severity:

MEDIUM

Confidentiality:

Low

Integrity:

Low

Availability:

Low

Attack Vector:

Network

Attack Complexity:

Low

Attack Required:

None

Privileges Required:

Undefined

User Interaction: