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    CVE-2018-20753

    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:Feb 5, 2019
    Last Modified:Nov 7, 2025
    EPS:Feb 5, 2019
    EPSS Score:0.3865
    CVSS Score:9.8

    CISA Notification

    Description

    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.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 4, 2022
    1591 days ago
    Alert Date
    Apr 13, 2022
    1612 days ago

    Affected Products

    Vendor
    Kaseya
    Product
    Virtual System Administrator

    Exploits

    https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2013-10034 (CVSS 9.3) — An unrestricted file upload vulnerability exists in Kaseya KServer versions prior to 6.3.0.2. The uploadImage.…
    CVE-2015-6922 (CVSS 9.8) — Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.33, 8.x before 8.0.0.23, 9.0 before 9.0.0.19, and 9…
    CVE-2015-6589 (CVSS 8.8) — Directory traversal vulnerability in Kaseya Virtual System Administrator (VSA) 7.0.0.0 before 7.0.0.33, 8..0.0…
    CVE-2019-15506 (CVSS 7.5) — An issue was discovered in Kaseya Virtual System Administrator (VSA) through 9.4.0.37. It has a critical infor…
    CVE-2017-12410 (CVSS 7.4) — It is possible to exploit a Time of Check & Time of Use (TOCTOU) vulnerability by winning a race condition whe…
    CVE-2015-2863 (CVSS 4.3) — Open redirect vulnerability in Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.29, 8.x before 8.0.0…
    CVE-2015-2862 (CVSS 4) — Directory traversal vulnerability in Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.29, 8.x before…
    CVE-2014-2926 (CVSS 1.7) — kapfa.sys in Kaseya Virtual System Administrator (VSA) 6.5 before 6.5.0.17 and 7.0 before 7.0.0.16 allows loca…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High