Vulnerability Database

313,359

Total vulnerabilities in the database

CVE-2021-27770

The vulnerability was discovered within the “FaviconService”. The service takes a base64-encoded URL which is then requested by the webserver. We assume this service is used by the “meetings”-function where users can specify an external URL where the online meeting will take place.

  • Published: May 12, 2022
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-27770
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L

CVSS v2:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:M/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
hcltech / sametime 11.6 11.6.x