Remote Code Execution Vulnerability in Veeam Backup & Replication for High Availability Deployments
CVE-2026-21671

9.1CRITICAL

Key Information:

Vendor

Veeam
Status
Software Appliance
Vendor
CVE Published:
12 March 2026

What is CVE-2026-21671?

A vulnerability exists within Veeam Backup & Replication that permits an authenticated user holding the Backup Administrator role to execute arbitrary code remotely. This specifically impacts configurations set up for high availability deployments, potentially jeopardizing the integrity and security of the backup and replication environment.

Affected Version(s)

Software Appliance 13.0.1

References

https://www.veeam.com/kb4831

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.