Critical severity · published Mar 12, 2026
CVE-2026-21671
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 &…
9.1
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BR
Backup & Replication · Veeam
13.0.0.496 through 13.0.1.1071 · source: NVD
SA
Software Appliance · Veeam
13.0.1 before 13.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21671
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21671
Vendor Advisory
https://www.veeam.com/kb4831
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