VulnerabilityAnalyzed
CVE-2026-21666
A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.
HIGH 8.8EPSS 1.13%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.13% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- veeam/veeam backup \& replication
- Source
- support@hackerone.com
References
- https://www.veeam.com/kb4830Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.