CVE-2026-106077 Veeam Backup for Microsoft 365 - Broken Access Control

Veeam Backup for Microsoft 365 contains a file system read vulnerability caused by improper access control, letting users with Administrator role read arbitrary files on the backup server with LocalSystem privileges, exploit requires Administrator role.

CVSS base score 8.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
File System Read, Information Disclosure
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
27 October 2026
Updated
29 October 2026
Weakness
CWE-863

Vendor fix

Update to the latest version of Veeam Backup for Microsoft 365.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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