CVE-2026-21671
Critical
Description
A vulnerability allowing an authenticated user with the Backup Administrator role to perform remote code execution (RCE) in high availability (HA) deployments of Veeam Backup & Replication.
SeverityCritical
CVSS9.1
Exploit probability—
Product
Veeam Backup \& Replication
PublishedMar 12, 2026
First seenMar 12, 2026
Weakness typeCWE-693CWE-693
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| veeam veeam_backup_\&_replication | 13.0.0.496 ≤ v ≤ 13.0.1.1071 | — |
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