HNB Organizer 1.9.18-10 Local Buffer Overflow via -rc Parameter
Priority HIGH 72CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0021 11th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| hnb | HNB | 1.9.18-10 | — | No fix listed | CNA |
- HNB Vendorhnb Affected 1.9.18-10 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hnb_project:hierarchical_notebook:*:*:*:*:*:*:*:* | up to 1.9.18-10 | Vulnerable | Hnb Project |
- cpe:2.3:a:hnb_project:hierarchical_notebook:*:*:*:*:*:*:*:* Versions up to 1.9.18-10 Vulnerable ·Hnb Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-20045
- 2026-10-03 Alias added: GHSA-7v78-h4hm-8g8r
References
Exploit 1
Other 1
Sources
- CVE-2016-20045 · CVE Program
- CVE-2016-20045 · NVD
- FIRST EPSS
- GHSA-7v78-h4hm-8g8r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences