What’s Vulnerable › Vulnerabilities

CVE-2021-40387

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-01 · updated 2026-06-17

Description

An issue was discovered in the server software in Kaseya Unitrends Backup Software before 10.5.5-2. There is authenticated remote code execution.

Affected products

Kaseya Unitrends Backup Software: before 10.5.5-2 — fixed in 10.5.5-2

How to fix

Upgrade to a fixed version: Kaseya Unitrends Backup Software 10.5.5-2. Check the vendor advisory for mitigations.

References

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