CVE-2026-21671

Published: Mar 12, 2026

Modified: May 10, 2026

PUBLISHED

CVSS v3.1

9.1

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.

Vendor	Product	Versions
Veeam	Software Appliance	affected `13.0.1 - < 13.0.1`

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

https://www.veeam.com/kb4831

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CVE-2026-21671

Description

Affected Products

CVSS v3.1 Details

References