Local Buffer Overflow in HNB Organizer by HNB Development
CVE-2016-20045

8.6HIGH

Key Information:

Vendor

Hnb

Status
Hnb
Vendor
CVE Published:
28 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2016-20045?

HNB Organizer version 1.9.18-10 exhibits a local buffer overflow vulnerability that enables local attackers to execute arbitrary code. By supplying an oversized argument to the -rc command-line parameter, attackers can craft a malicious input string, exceeding 108 bytes, containing shellcode and a return address. This input can overwrite the stack, potentially leading to unauthorized code execution.

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Affected Version(s)

HNB 1.9.18-10

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-2016-20045 - Proof of Concept

References

https://www.exploit-db.com/exploits/40025
exploit
http://hnb.sourceforge.net/
product
https://www.vulncheck.com/advisories/hnb-organizer-10-loc...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
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

Juan Sacco - http://www.exploitpack.com - jsacco@exploitpack.com
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