VULNERABILITY INTELLIGENCE
CVE-2020-4102
CVSS score6.7 MEDIUM
EPSS probability0.33%
CISA KEVNot currently listed
Published2020-12-02
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Description
HCL Notes is susceptible to a Buffer Overflow vulnerability in DXL due to improper validation of user input. A successful exploit could enable an attacker to crash Notes or execute attacker-controlled code on the client system.
Weakness classification
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Primary references
- psirt@hcl.com — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory