CVE-2026-21671

EUVD-2026-11583
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.
Code Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
veeamveeam_backup_\&_replication
13.0.0.496 ≤
𝑥
≤ 13.0.1.1071
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.veeam.com/kb4831