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CVE-2020-15518

HIGH severity · CVSS 8.8 · Missing authorization
8.8CVSS HIGH

Summary

VeeamFSR.sys in Veeam Availability Suite before 10 and Veeam Backup & Replication before 10 has no device object DACL, which allows unprivileged users to achieve total control over filesystem I/O requests.

Impact & exploitability

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Last checked: Wed, 10 Jun 2026 22:18:30 UTC