CVE-2016-20045 HNB Organizer 1.9.18-10 Local Buffer Overflow via -rc Parameter
Local attackers can execute arbitrary code by exploiting a stack buffer overflow in the -rc parameter of HNB Organizer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-20045?
CVE-2016-20045 is a high-severity memory corruption vulnerability in HNB, published on 28 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-787
Which versions are affected by CVE-2016-20045?
It affects 1 product.
Products include Hnb Project Hierarchical Notebook.
How do I fix CVE-2016-20045?
No fix has been published for CVE-2016-20045 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2016-20045 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20045 exists.
Sources
Also known as GHSA-7v78-h4hm-8g8r.