CVE-2026-21668
Modified Modified - Updated After Analysis

Authenticated File Manipulation Vulnerability in Backup Repository

Publication date: 2026-03-12

Last updated on: 2026-05-10

Assigner: HackerOne

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

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Meta Information

Published
2026-03-12
Last Modified
2026-05-10
Generated
2026-07-06
AI Q&A
2026-03-12
EPSS Evaluated
2026-07-05
NVD
CVE-2026-21668
EUVD
EUVD-2026-11577

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
veeam veeam_backup_&_replication From 12.0.0.1402 (inc) to 12.3.2.4465 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-693 The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
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

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Executive Summary

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

Impact Analysis

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.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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