Medium severity · published Mar 12, 2026
CVE-2026-21668
A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BR
Backup & Replication · Veeam
12.3.2 before 12.3.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21668
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21668
Vendor Advisory
https://www.veeam.com/kb4830
More from Backup & Replication
9.8
CVE-2024-40711
Veeam Backup and Replication Deserialization Vulnerability
9.8
CVE-2022-26501
Veeam Backup & Replication Remote Code Execution Vulnerability
8.8
CVE-2022-26500
Veeam Backup & Replication Remote Code Execution Vulnerability
7.5
CVE-2023-27532
Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function Vulnerability
9.9
CVE-2026-21708
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user