Detections
Analytics

CVE-2021-43034

high

Description

An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A world writable file allowed local users to execute arbitrary code as the user apache, leading to privilege escalation.

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: 4.6

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

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.00192