Buffer overflow in Hcltech Notes

CVE-2020-4102

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.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (23.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-4102: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Hcltech Notes — versions 10.0, 10.0.1, 11.0
  • Hcl Notes — versions v9, v10, v11

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-4102?
CVE-2020-4102 is a medium-severity vulnerability in Hcltech Notes, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.7/10. Published 2020-12-02.
How severe is CVE-2020-4102?
Medium severity. CVSS v3 base score is 6.7 out of 10.