CVE-2021-27768

MediumCVSS 5.9/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
May 12, 2022
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-277695.3Information leakage occurs when a website reveals information that could aid an attacker to further exploit the system. This information mayCVE-2021-277708.8The vulnerability was discovered within the “FaviconService”. The service takes a base64-encoded URL which is then requested by the webserveCVE-2021-277717.6User SID can be modified resulting in an Arbitrary File Upload or deletion of directories causing a Denial of Service. When interacting in aCVE-2021-277726.5Users are able to read group conversations without actively taking part in them. Next to one to one conversations, users are able to start gCVE-2021-277734.3This vulnerability allows users to execute a clickjacking attack in the meeting's chat.CVE-2021-277745.4User input included in error response, which could be used in a phishing attack.CVE-2021-277777.5XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient CVE-2021-277784.8HCL Traveler is vulnerable to a cross-site scripting (XSS) caused by improper validation of the Name parameter for Approved Applications in CVE-2021-277799.1VersionVault Express exposes sensitive information that an attacker can use to impersonate the server or eavesdrop on communications with thCVE-2021-277805.3The software may be vulnerable to both Un-Auth XML interaction and unauthenticated device enrollment.CVE-2021-277814.8The Master operator may be able to embed script tag in HTML with alert pop-up display cookie.CVE-2021-277827.5HCL BigFix Mobile / Modern Client Management Admin and Config UI passwords can be brute-forced. User should be locked out for multiple inval
CVE-2021-27768: Medium severity, CVSS 5.9 | Vulnix