CVE-2021-43037
7.8 · HIGHOverview
CVE-2021-43037 is a high-severity vulnerability affecting kaseya unitrends_backup. It was published on December 6, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from kaseya. Update unitrends_backup to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| kaseya | unitrends_backup | >= 10.0, < 10.5.5 | Affected |
References
Frequently Asked Questions
What is CVE-2021-43037?
CVE-2021-43037 is a high-severity vulnerability affecting kaseya unitrends_backup. It was published on December 6, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2021-43037?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-43037?
Check the references section for vendor advisories and patches from kaseya. Update unitrends_backup to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-43037?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-43037 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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