Local Buffer Overflow Vulnerability in FTPDummy by Dummy Software
CVE-2020-37029

8.4HIGH

Key Information:

Vendor

K.soft

Status
Ftpdummy
Vendor
CVE Published:
30 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37029?

FTPDummy version 4.80 has a local buffer overflow vulnerability due to improper handling of preference files. An attacker can exploit this vulnerability by crafting a malicious preference file that contains specially defined shellcode. When processed by the FTPDummy application, this crafted file can lead to an overwrite of the structured exception handler, allowing the execution of arbitrary system commands. This flaw poses a significant risk, enabling potential unauthorized actions on the affected systems.

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Affected Version(s)

FTPDummy 4.80

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-2020-37029 - Proof of Concept

References

https://www.exploit-db.com/exploits/48685
exploit
http://www.dummysoftware.com/ftpdummy.html
product
https://www.vulncheck.com/advisories/ftpdummy-local-buffe...
third-party-advisory

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Felipe Winsnes
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