CVE-2026-21671

CRITICAL

9.1

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.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published3/12/2026

Last Modified3/31/2026

Sourcenvd

Honeypot Sightings0

Affected Products

veeam:veeam_backup_\&_replication

Weaknesses (CWE)

CWE-94

References

https://www.veeam.com/kb4831(support@hackerone.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.