CVE-2021-27760: Hcltech Hcl Inotes

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in the Sametime chat feature in the Notes 11.0 - 11.0.1 FP4 clients. An authenticated Sametime chat user could cause Remote Code Execution on another chat client by sending a specially formatted message through chat containing Javascript code.

Affected products

• Hcltech Hcl Inotes: version 11.0.0 only; version 11.0.1 only

Published 2022-05-06. Last modified 2026-06-17.