CVE-2026-21671

Published Mar 12, 2026 CVSS 3.1 · 9.1 Critical EPSS 1.5% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
References
History
Type Values Removed Values Added
Title Remote Code Execution via Backup Administrator in Veeam High‑Availability Deployments
Type Values Removed Values Added
Title Remote Code Execution via Backup Administrator in Veeam High‑Availability Deployments
Type Values Removed Values Added
Title Authenticated Remote Code Execution in High‑Availability Veeam Backup & Replication
Type Values Removed Values Added
Title Authenticated Remote Code Execution in High‑Availability Veeam Backup & Replication
Type Values Removed Values Added
Weaknesses CWE-693
Type Values Removed Values Added
Title Authenticated Remote Code Execution in HA Deployments of Veeam Backup & Replication
Type Values Removed Values Added
First Time appeared Veeam veeam Backup \& Replication
Weaknesses CWE-94
CPEs cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*
Vendors & Products Veeam veeam Backup \& Replication
Type Values Removed Values Added
Title Authenticated Remote Code Execution in HA Deployments of Veeam Backup & Replication
Type Values Removed Values Added
First Time appeared Veeam
Veeam software Appliance
Vendors & Products Veeam
Veeam software Appliance
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
May 10, 2026, 1:48 PM
Reserved
Jan 2, 2026, 3:00 PM
Status
Modified
Published
Mar 12, 2026, 3:16 PM
Modified
Jun 17, 2026, 10:18 AM