April 13, 2022 · Applied Cybernetics Group
CVE-2018-20753 — Kaseya Virtual System/Server Administrator (VSA)
known ransomware use
Kaseya VSA Remote Code Execution Vulnerability
- Added to KEV
2022-04-13- Federal due date
2022-05-04- Vendor
- Kaseya
- Product
- Virtual System/Server Administrator (VSA)
- EPSS
- 97.8th percentile (score 0.479, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2018-20753
CISA short description
Kaseya VSA RMM allows unprivileged remote attackers to execute PowerShell payloads on all managed devices.
Required action
Apply updates per vendor instructions.