CVE-2020-4097

moderate-risk

Published 2020-11-05

In HCL Notes version 9 previous to release 9.0.1 FixPack 10 Interim Fix 8, version 10 previous to release 10.0.1 FixPack 6 and version 11 previous to 11.0.1 FixPack 1, a vulnerability in the input parameter handling of the Notes Client could potentially be exploited by an attacker resulting in a buffer overflow. This could enable an attacker to crash HCL Notes or execute attacker-controlled code on the client.

Do I need to act?

0.08% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.8/10 Medium

PHYSICAL / LOW complexity

Affected Products (20)

Notes

Affected Vendors

Hcltech

References (2)

Vendor Advisory https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0084796

/ 100

moderate-risk

Severity 22/34 · High

Exploitability 0/34 · Minimal

Exposure 24/34 · High