Buffer Overflow Vulnerability in PCMan FTP Server by PCMan
CVE-2025-4079

6.9MEDIUM

Key Information:

Vendor

Pcman

Status
Ftp Server
Vendor
CVE Published:
29 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-4079?

A buffer overflow vulnerability exists in the RENAME Command Handler of PCMan FTP Server versions up to 2.0.7. This flaw allows remote attackers to exploit the system by manipulating function calls, potentially leading to unauthorized access or data alteration. The vulnerability has been publicly disclosed, raising concerns for users and administrators utilizing this FTP server. Employing updates and following security best practices is crucial to mitigate the risk associated with this vulnerability.

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Deploy the Patch

Affected Version(s)

FTP Server 2.0.0

FTP Server 2.0.1

FTP Server 2.0.2

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-2025-4079 - Proof of Concept

References

https://vuldb.com/?id.306516
vdb-entry
https://vuldb.com/?ctiid.306516
signaturepermissions-required
https://vuldb.com/?submit.560541
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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