CVE-2021-40386
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
- Record
CVE-2021-40386- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
- Record
CVE-2021-40386- Updated
- 2026-11-02
EUVDEUVD-2021-27563 No score
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
- Record
EUVD-2021-27563- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hpmq-qx89-42jf
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
Kaseya Unitrends Client/Agent through 10.5,5 allows remote attackers to execute arbitrary code.
- Record
GHSA-hpmq-qx89-42jf- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40386 is a critical vulnerability (CVSS 9.8) in Kaseya Unitrends Backup, published April 15, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.94%, the 80th percentile. No source names a fixed version.