Buffer Overflow Vulnerability in PCMan FTP Server
CVE-2025-4239

6.9MEDIUM

Key Information:

Vendor

Pcman

Status
Ftp Server
Vendor
CVE Published:
3 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-4239?

A buffer overflow vulnerability exists in the TYPE Command Handler of PCMan FTP Server 2.0.7. This flaw allows remote attackers to manipulate the affected code, potentially leading to arbitrary code execution. The vulnerability has been publicly disclosed, increasing the risk of exploitation. It is crucial for users of the affected version to apply the necessary mitigations to safeguard their systems from potential attacks.

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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-2025-4239 - Proof of Concept

References

https://vuldb.com/?id.307330
vdb-entry
https://vuldb.com/?ctiid.307330
signaturepermissions-required
https://vuldb.com/?submit.561562
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

  • Vulnerability Reserved

Credit

Fernando Mengali (VulDB User)
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