Improper access control in Backup & Replication - CVE-2026-44963
Published: June 9, 2026
Vulnerability identifier: #VU134000
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-44963
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Veeam
Affected software:
Backup & Replication
Backup & Replication
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code on the backup server.
The vulnerability exists due to improper access control in the backup server when handling requests from authenticated domain users. A remote user can send a specially crafted request to execute arbitrary code on the backup server.
Only domain-joined backup servers are vulnerable.
How to mitigate CVE-2026-44963
Install security update from vendor's website.