Critical severity · published Mar 12, 2026
CVE-2026-21708
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user
9.9
CVSS
1.1%
EPSS
No
On KEV
Description
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BR
Backup & Replication · Veeam
12.0.0.1402 before 12.3.2.4465. · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21708
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21708
Vendor Advisory
https://www.veeam.com/kb4830
Vendor Advisory
https://www.veeam.com/kb4831
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