CVE-2026-21667 | Veeam Backup and Replication up to 12.3.1 access control (kb4830 / WID-SEC-2026-0709)
A vulnerability marked as critical has been reported in Veeam Backup and Replication up to 12.3.1. Affected by this vulnerability is an unknown functionality. The manipulation leads to improper access controls.
This vulnerability is traded as CVE-2026-21667. It is possible to initiate the attack remotely. There is no exploit available.
It is suggested to upgrade the affected component.