CVE-2026-21669: A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.

CVE-2026-21669 · Severity: critical · CVSS 9.9 · Published 2026-03-12

Veeam Backup & Replication is a data protection solution used to back up, restore, and replicate virtual and physical machines. A critical vulnerability allows a user with basic domain credentials to execute malicious code on the backup server. This could lead to a total compromise of the backup infrastructure, potentially allowing an attacker to delete backups, steal sensitive data, or deploy ransomware across the environment.

Technologies: Veeam Backup \. Vendors: Veeam.

Quick answers

Is CVE-2026-21669 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-21669 being exploited in the wild.
How severe is CVE-2026-21669?
Critical severity, with a CVSS score of 9.9, published 12 March 2026.
Which products and versions are affected?
Veeam Veeam Backup & Replication 13.0.0.496 up to 13.0.1.1071.
Is there a fix for CVE-2026-21669?
A patch was published on 2026-03-12: Fixed in version 13.0.1.2067 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-21669 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-21669?
Check whether you run Veeam Backup \. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A remote code execution (RCE) vulnerability exists in Veeam Backup & Replication due to improper control of code generation (CWE-94). The flaw allows an authenticated domain user to execute arbitrary commands on the Backup Server with high privileges. The attack vector is over the network and requires low-privileged authentication but no user interaction. Successful exploitation results in a full system compromise (Confidentiality, Integrity, and Availability impact) and allows the attacker to escape the initial security scope. The issue is resolved in Veeam Backup & Replication version 13.0.1.2067.

Affected products

  • Veeam Veeam Backup & Replication 13.0.0.496 up to 13.0.1.1071

Timeline

  • 2026-03-12: disclosed
  • 2026-03-12: advisory
  • 2026-03-12: patched: Fixed in version 13.0.1.2067

References

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