CVE-2021-27768: An SSL certificate host verification vulnerability affects HCL Verse for Android

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-12 · updated 2026-06-17
Weakness: CWE-300

Description

Using the ability to perform a Man-in-the-Middle (MITM) attack, which indicates a lack of hostname verification, sensitive account information was able to be intercepted. In this specific scenario, the application's network traffic was intercepted using a proxy server set up in 'transparent' mode while a certificate with an invalid hostname was active. The Android application was found to have hostname verification issues during the server setup and login flows; however, the application did not process requests post-login.

Affected products

HCL Software HCL Verse: before 12.0.9 — fixed in 12.0.9

How to fix

Upgrade to a fixed version: HCL Software HCL Verse 12.0.9. Check the vendor advisory for mitigations.

References

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