Buffer Overflow Vulnerability in PCMan FTP Server
CVE-2025-3683

6.9MEDIUM

Key Information:

Vendor

Pcman

Status
Ftp Server
Vendor
CVE Published:
16 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-3683?

A vulnerability exists in PCMan FTP Server 2.0.7 due to improper handling of commands by the SIZE Command Handler. This flaw can lead to a buffer overflow, allowing an attacker to execute unauthorized commands remotely. The exploitation of this vulnerability poses significant risks as it can be targeted from remote locations and has been publicly disclosed, increasing the urgency for patching the affected software.

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Deploy the Patch

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-2025-3683 - Proof of Concept

References

https://vuldb.com/?id.304972
vdb-entry
https://vuldb.com/?ctiid.304972
signaturepermissions-required
https://vuldb.com/?submit.552791
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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