Improper input validation in HCL Notes
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.
Why it matters now
EPSS 0.01262 69th 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 | v9; v10; v11 | — | No fix listed | CNA |
- HCL Notes VendorHCL Affected v9; v10; 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-2020-14258
- 2026-10-03 Alias added: GHSA-xjww-8m9x-vvj8
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-2020-14258 · CVE Program
- CVE-2020-14258 · NVD
- FIRST EPSS
- GHSA-xjww-8m9x-vvj8 · GitHub Advisory Database · CC BY 4.0
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