CVE-2021-43035

critical

Description

An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Two unauthenticated SQL injection vulnerabilities were discovered, allowing arbitrary SQL queries to be injected and executed under the postgres superuser account. Remote code execution was possible, leading to full access to the postgres user account.

References

https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2

https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1

https://helpdesk.kaseya.com/hc/en-gb/articles/4412762258961

Details

Source: Mitre, NVD

Published: 2021-12-06

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.04049