Out-of-bounds write in HCL Notes
Priority MEDIUM 46CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
A vulnerability in the MIME message handling of the HCL Notes v9 client could potentially be exploited by an unauthenticated attacker resulting in a stack buffer overflow. This could allow a remote attacker to crash the Notes application or inject code into the system which would execute with the privileges of the currently logged-in user.
Why it matters now
EPSS 0.02253 83rd 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 Notes | v9 | — | No fix listed | CNA |
- HCL Notes Vendor— Affected v9 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hcltech:notes:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | HCL Software |
| cpe:2.3:a:hcltech:notes:9.0.1:-:*:*:*:*:*:* | 9.0.1 | Vulnerable | HCL Software |
- cpe:2.3:a:hcltech:notes:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·HCL Software
- cpe:2.3:a:hcltech:notes:9.0.1:-:*:*:*:*:*:* Versions 9.0.1 Vulnerable ·HCL Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-14224
- 2026-10-03 Alias added: GHSA-43c2-x3q5-72p4
More HCL Software Notes vulnerabilities
- TI-2022-22044 Out-of-bounds write in HCL Software Notes CVSS 3.1CRITICAL 9.8
- TI-2022-22042 Out-of-bounds write in HCL Software Notes CVSS 3.1CRITICAL 9.8
- TI-2022-22040 Out-of-bounds write in HCL Software Notes CVSS 3.1CRITICAL 9.8
- TI-2020-11157 Out-of-bounds write in HCL Notes CVSS 3.1CRITICAL 9.8
- TI-2020-11143 A vulnerability in the input parameter handling of HCL Notes v9 could potentially be… CVSS 3.1HIGH 8.8
- TI-2020-11153 Improper input validation in HCL Notes CVSS 3.1HIGH 7.5
Sources
- CVE-2020-14224 · CVE Program
- CVE-2020-14224 · NVD
- FIRST EPSS
- GHSA-43c2-x3q5-72p4 · GitHub Advisory Database · CC BY 4.0
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