Buffer Overflow in PCMan FTP Server Affects Remote Functionality
CVE-2025-4158

6.9MEDIUM

Key Information:

Vendor

Pcman

Status
Ftp Server
Vendor
CVE Published:
1 May 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-4158?

A critical buffer overflow vulnerability exists in the PROMPT Command Handler component of PCMan FTP Server versions up to 2.0.7. An attacker can exploit this vulnerability remotely to trigger a buffer overflow, potentially compromising the affected system. This vulnerability has been publicly disclosed and poses a substantial risk to users running vulnerable versions of the software.

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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-2025-4158 - Proof of Concept

References

https://vuldb.com/?id.306690
vdb-entry
https://vuldb.com/?ctiid.306690
signaturepermissions-required
https://vuldb.com/?submit.561028
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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