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CVE-2026-106078

Medium

Description

A vulnerability allowing an unauthenticated attacker to bypass REST API authentication with a forged federation token and receive responses from REST API endpoints that do not call the Veeam Backup for Microsoft 365 backup service.

SeverityMedium
CVSS6.9
Exploit probability—
ProductBackup for Microsoft 365
PublishedOct 27, 2026
First seenOct 27, 2026
Weakness typeCWE-347CWE-347

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Veeam Backup for Microsoft 3658.0 ≤ v ≤ 8.6.0.1102—

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