CVE-2016-20045

HIGH

HNB Organizer 1.9.18-10 Local Buffer Overflow via -rc Parameter

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-20045. PoCs published by Juan Sacco.

AI-analyzed exploit summary This exploit demonstrates a local buffer overflow in HNB Organizer 1.9.18-10 by overflowing a 108-byte buffer with a NOP sled, shellcode, and a controlled EIP to achieve arbitrary code execution. The shellcode spawns a shell, confirming the vulnerability's exploitability.

Description

HNB Organizer 1.9.18-10 contains a local buffer overflow vulnerability that allows 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 to overwrite the stack and achieve code execution.

Exploits (1)

exploitdb WORKING POC
by Juan Sacco · pythonlocallinux
https://www.exploit-db.com/exploits/40025

This exploit demonstrates a local buffer overflow in HNB Organizer 1.9.18-10 by overflowing a 108-byte buffer with a NOP sled, shellcode, and a controlled EIP to achieve arbitrary code execution. The shellcode spawns a shell, confirming the vulnerability's exploitability.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: HNB Organizer 1.9.18-10
No auth needed
Prerequisites: Local access to the target system · HNB Organizer 1.9.18-10 installed
devstral-2 · analyzed Apr 08, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-40025
https://www.exploit-db.com/exploits/40025
Product product
Official Product Homepage
http://hnb.sourceforge.net/
Third Party Advisory third-party-advisory
VulnCheck Advisory: HNB Organizer 1.9.18-10 Local Buffer Overflow via -rc Parameter
https://www.vulncheck.com/advisories/hnb-organizer-10-local-buffer-overflow-via-rc-parameter

Scores

CVSS v3 8.4
EPSS 0.0021
EPSS Percentile 10.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (2)
hnb/HNB 1.9.18-10
hnb_project/hierarchical_notebook < 1.9.18-10
Published Mar 28, 2026
Tracked Since Mar 29, 2026