CVE-2026-21668
Received
Received - Intake
Authenticated File Manipulation Vulnerability in Backup Repository
Publication date: 2026-03-12
Last updated on: 2026-03-31
Assigner: HackerOne
Description
Description
A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| veeam | veeam_backup_&_replication | From 12.0.0.1402 (inc) to 12.3.2.4465 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability allows an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.
How can this vulnerability impact me? :
The vulnerability can have a severe impact as it allows an authenticated user to bypass security restrictions and manipulate files, potentially leading to complete compromise of the backup data's confidentiality, integrity, and availability.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
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