CVE-2021-43038
HIGHKaseya Unitrends Backup <10.5.5 - Privilege Escalation
Title source: llmDescription
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The wguest account could execute commands by injecting into PostgreSQL trigger functions. This allowed privilege escalation from the wguest user to the postgres user.
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
8.8
EPSS
0.0223
EPSS Percentile
80.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-74
Status
published
Products (1)
kaseya/unitrends_backup
10.0 - 10.5.5
Published
Dec 06, 2021
Tracked Since
Feb 18, 2026