CVE-2021-43042
CRITICALKaseya Unitrends Backup <10.5.5 - Buffer Overflow
Title source: llmDescription
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A buffer overflow existed in the vaultServer component. This was exploitable by a remote unauthenticated attacker.
References (3)
Core 3
Core References
Exploit, Third Party Advisory
https://www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2
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
Scores
CVSS v3
9.8
EPSS
0.0328
EPSS Percentile
87.2%
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-120
Status
published
Products (1)
kaseya/unitrends_backup
10.0 - 10.5.5
Published
Dec 06, 2021
Tracked Since
Feb 18, 2026