CVE-2026-21708 | Veeam Backup and Recovery up to 12.3.1/13.0.0 privilege escalation (kb4831)

A vulnerability has been found in Veeam Backup and Recovery up to 12.3.1/13.0.0 and classified as critical. This issue affects some unknown processing. The manipulation leads to privilege escalation.

This vulnerability is uniquely identified as CVE-2026-21708. The attack is possible to be carried out remotely. No exploit exists.

The affected component should be upgraded.