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:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

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