CVE-2026-21668

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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
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
HIGH 8.8

Tags

Authentication Bypass

Description

A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.

Analysis

Authenticated domain users can bypass file access restrictions on Backup Repository systems to read, modify, or delete arbitrary files due to insufficient authorization controls. This high-severity flaw affects users with valid domain credentials and requires no user interaction to exploit. …

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Remediation

Within 24 hours: Identify all backup repository instances and document current access controls; audit recent backup modification logs for suspicious activity. Within 7 days: Implement network segmentation to restrict backup repository access to authorized administrators only; enable enhanced logging and alerting on all file operations. …

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Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +44
POC: 0

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CVE-2026-21668 vulnerability details – vuln.today
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