Description
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Multiple functions in the bpserverd daemon were vulnerable to arbitrary remote code execution as root. The vulnerability was caused by untrusted input (received by the server) being passed to system calls.
References (3)
Core 3
Core References
Vendor Advisory
https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961
Exploit, Third Party Advisory
https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1
Exploit, Third Party Advisory
https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2
Scores
CVSS v3
9.8
EPSS
0.0599
EPSS Percentile
92.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-78
Status
published
Products (1)
kaseya/unitrends_backup
10.0 - 10.5.5
Published
Dec 06, 2021
Tracked Since
Feb 18, 2026