High severity7.8NVD Advisory· Published Dec 6, 2021· Updated Jun 17, 2026
CVE-2021-43037
CVE-2021-43037
Description
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. The Unitrends Windows agent was vulnerable to DLL injection and binary planting due to insecure default permissions. This allowed privilege escalation from an unprivileged user to SYSTEM.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:kaseya:unitrends_backup:*:*:*:*:*:*:*:*range: >=10.0,<10.5.5
- (no CPE)range: <10.5.5
- Kaseya/Unitrends Backup Appliancedescription
- Range: <10.5.5
Patches
Vulnerability mechanics
References
3- www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-1nvdExploitThird Party Advisory
- www.cyberonesecurity.com/blog/exploiting-kaseya-unitrends-backup-appliance-part-2nvdExploitThird Party Advisory
- helpdesk.kaseya.com/hc/en-gb/articles/4412762258961nvdVendor Advisory
News mentions
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