Vulnerability Details : CVE-2018-20753

Potential exploit
Used for ransomware!
Kaseya VSA RMM before R9.3 9.3.0.35, R9.4 before 9.4.0.36, and R9.5 before 9.5.0.5 allows unprivileged remote attackers to execute PowerShell payloads on all managed devices. In January 2018, attackers actively exploited this vulnerability in the wild.
Published 2019-02-05 06:29:01
Updated 2025-03-14 18:24:21
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2018-20753

CVE-2018-20753 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
Kaseya VSA Remote Code Execution Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Kaseya VSA RMM allows unprivileged remote attackers to execute PowerShell payloads on all managed devices.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2018-20753
Added on 2022-04-13 Action due date 2022-05-04

Exploit prediction scoring system (EPSS) score for CVE-2018-20753

EPSS FAQ
29.01%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 97 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-20753

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
 NIST
9.8
 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST
9.8
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 134c704f-9b21-4f2e-91b3-4a467353bcc0 2025-02-04
9.8
 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
 NIST 2025-01-27

References for CVE-2018-20753

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