CVE-2026-21672

HIGH
2026-03-12 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Local
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 - 17:16 nvd
HIGH 8.8

Tags

Privilege Escalation Windows

Description

A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.

Analysis

Local privilege escalation in Veeam Backup & Replication on Windows enables authenticated users to gain system-level access without user interaction. An attacker with local account credentials can exploit this vulnerability to achieve complete control over the backup infrastructure, including reading, modifying, or deleting backups. …

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Remediation

Within 24 hours: Inventory all Windows-based Veeam Backup & Replication servers and restrict local administrative access to essential personnel only. Within 7 days: Implement enhanced monitoring and logging on affected Veeam servers, review access logs for suspicious privilege escalation attempts, and apply compensating controls listed below. …

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Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +44
POC: 0

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CVE-2026-21672 vulnerability details – vuln.today
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