CVE•Published 2026-03-28•Modified 2026-04-08•1 article on news•7 live references•NVD data
CVE-2016-20045Hnb_project · Hierarchical_notebook
Vulnerability data via NVD (ingested)
CVSS v3.1
8.4
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
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.
Timeline
Published 2026-03-28
Modified 2026-04-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2016-20045Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Hnb Project Hierarchical Notebook"All exposed Hnb Project Hierarchical Notebook instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Hierarchical Notebook"HTTP body or banner mentions "Hierarchical Notebook" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2016-20045Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2016-20045Censys host search filtered to this CVE id.
grep.app
CVE-2016-20045Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2016-20045GitHub code search for direct mentions.
Google dork
"CVE-2016-20045" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.