CVE-2026-21666

A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server

Critical · published March 12, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
66.6
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01148 · 66.6th percentile
Published
2026-03-12T15:09Z
EPSS history
Timeline
  • 12 MAR 15:09Z
    A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server
    cvelistv5