CVE-2026-21671criticalCWE-693

CVE-2026-21671: critical vulnerability in Veeam Software Appliance

Published · Updated

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.1epss 1.3%
exploitation probability
1.3%top 30% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
Veeam · Software Appliance
Related CVEs — Veeam Software Appliance

In the same product, most dangerous first.

CVE-2026-21709MEDIUMCVE-2026-21709EPSS 0.2%
References
https://www.veeam.com/kb4831