CVE-2018-20753VulnerabilityPublished 04/13/2022Updated 10/24/2026

CVE-2018-20753: Kaseya VSA Remote Code Execution Vulnerability

Affects Kaseya Virtual System/Server Administrator (VSA)Source CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 04/13/2022
KEV deadline: 05/04/2022
Ransomware: Used in ransomware campaigns
EPSS: 29.6% chance of exploitation in 30 days – higher than 98% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2018-20753 (opens in a new tab)

Description

CVE-2018-20753 is a remote code execution vulnerability in Kaseya Virtual System/Server Administrator (VSA) that allows unprivileged remote attackers to execute PowerShell payloads on all managed devices. This vulnerability has been exploited in the wild and is known to have been used in ransomware campaigns. No specific affected versions or patch information is provided in the available data.

Summary

Kaseya VSA RMM contains a remote code execution vulnerability (CVE-2018-20753) that permits unprivileged remote attackers to run arbitrary PowerShell commands on all devices managed by the platform. This vulnerability has been actively exploited in the wild and leveraged in ransomware attacks. The input data does not specify affected versions or remediation status.

Impact

Successful exploitation allows attackers to execute arbitrary PowerShell payloads remotely on all managed devices, potentially leading to full system compromise and enabling ransomware deployment. The vulnerability's exploitation in the wild and use in ransomware campaigns indicates a significant security risk.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Due to the lack of explicit patch or mitigation information, organizations should consult Kaseya's official resources for updates and apply any available fixes promptly.

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:26:35 UTC

References

Related threats