CVE-2026-21669

CRITICAL
2026-03-12 [email protected]
9.9
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 19:57 vuln.today
CVE Published
Mar 12, 2026 - 15:16 nvd
CRITICAL 9.9

Tags

RCE Code Injection

Description

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

Analysis

Yet another Veeam Backup & Replication RCE vulnerability allowing authenticated domain users to execute code on the Backup Server with scope change (CVSS 9.9). Part of a cluster of related Veeam vulnerabilities disclosed together.

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Remediation

Within 24 hours: Isolate the Backup Server from the network or restrict access to essential administrators only; audit domain user access logs for suspicious activity; notify the vendor for emergency patch timeline. Within 7 days: Implement network segmentation to limit backup server access to specific admin workstations; enforce multi-factor authentication for all backup server administrative access; conduct forensic analysis of backup server logs. …

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Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +50
POC: 0

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CVE-2026-21669 vulnerability details – vuln.today
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