HCL Notes is vulnerable to an information leakage vulnerability through its support for…
Priority LOW 31Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
HCL Notes is vulnerable to an information leakage vulnerability through its support for the 'mailto' protocol. This vulnerability could result in files from the user's filesystem or connected network filesystems being leaked to a third party. All versions of HCL Notes 9, 10 and 11 are affected.
Why it matters now
EPSS 0.01163 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HCL | HCL Notes | All versions of HCL Notes v9; All versions of HCL Notes v10; All versions of HCL Notes v11 | — | No fix listed | CNA |
- HCL Notes VendorHCL Affected All versions of HCL Notes v9; All versions of HCL Notes v10; All versions of HCL Notes v11 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hcltech:notes:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:notes:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:notes:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | HCL Software |
- cpe:2.3:a:hcltech:notes:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:notes:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:notes:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·HCL Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-4089
- 2026-10-03 Alias added: GHSA-86j9-2vjw-f9pp
References
More HCL vulnerabilities
- TI-2025-38606 Boolean-Based SQL Injection in Multiple Unica Components CVSS 3.1CRITICAL 9.8
- TI-2025-34928 Improper input validation in HCL Aftermarket DPC CVSS 3.1CRITICAL 9.8
- TI-2025-32705 HCL AION is susceptible to Potential Command Injection vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-34927 HCL Aftermarket DPC is affected by Weak Password Policy vulnerability CVSS 3.1CRITICAL 9.8
- TI-2025-34925 Unrestricted file upload in HCL Aftermarket DPC CVSS 3.1CRITICAL 9.8
- TI-2025-34919 Improper access control in HCL Aftermarket DPC CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-4089 · CVE Program
- CVE-2020-4089 · NVD
- FIRST EPSS
- GHSA-86j9-2vjw-f9pp · 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