CVE-2021-3563: Debian Linux

High severity, CVSS 7.4. EPSS: 1.7% chance of exploitation in the next 30 days.

A flaw was found in openstack-keystone. Only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity.

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only
• Openstack Keystone: any version
• Red Hat Openstack Platform: version 10.0 only; version 13.0 only; version 16.1 only; version 16.2 only

Published 2022-08-26. Last modified 2026-06-17.