CVE-2026-21708: CWE-89 SQL Injection in Veeam Backup and Replication
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-21708) in Veeam Backup and Replication (versions 12 and 13) is classified as CWE-89 SQL Injection. It enables a Backup Viewer, a role with limited privileges, to perform remote code execution with the privileges of the postgres user. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability. No vendor patch or advisory details are currently available, and the product is not a cloud service.
Potential Impact
Successful exploitation allows an attacker with Backup Viewer access to execute arbitrary code remotely as the postgres user, potentially leading to full system compromise including data confidentiality, integrity, and availability impacts. This elevates the privileges of a low-privileged user to a high level, posing a critical security risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Backup Viewer privileges to trusted users only and monitor for unusual activity related to database access. Avoid exposing the Backup and Replication management interfaces to untrusted networks.
CVE-2026-21708: CWE-89 SQL Injection in Veeam Backup and Replication
Description
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-21708) in Veeam Backup and Replication (versions 12 and 13) is classified as CWE-89 SQL Injection. It enables a Backup Viewer, a role with limited privileges, to perform remote code execution with the privileges of the postgres user. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability. No vendor patch or advisory details are currently available, and the product is not a cloud service.
Potential Impact
Successful exploitation allows an attacker with Backup Viewer access to execute arbitrary code remotely as the postgres user, potentially leading to full system compromise including data confidentiality, integrity, and availability impacts. This elevates the privileges of a low-privileged user to a high level, posing a critical security risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Backup Viewer privileges to trusted users only and monitor for unusual activity related to database access. Avoid exposing the Backup and Replication management interfaces to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-01-04T15:00:06.573Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b2fb902f860ef943d10b77
Added to database: 3/12/2026, 5:44:48 PM
Last enriched: 4/18/2026, 1:51:22 PM
Last updated: 4/27/2026, 3:27:21 AM
Views: 296
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