{"id":"CVE-2018-20753","title":"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","summary":"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 vulnerabili…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"kaseya","product":"virtual_system_administrator","affected":["virtual_system_administrator >= 9.3, < 9.3.0.35","virtual_system_administrator >= 9.4, < 9.4.0.36","virtual_system_administrator >= 9.5, < 9.5.0.5"],"patched":["virtual_system_administrator 9.5.0.5"],"published":"2019-02-05","updated":"2026-08-13","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2018-20753","references":[{"url":"https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88","label":"cve@mitre.org"},{"url":"https://helpdesk.kaseya.com/hc/en-gb/articles/360000333152","label":"cve@mitre.org"},{"url":"https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://helpdesk.kaseya.com/hc/en-gb/articles/360000333152","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20753","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild"],"epss":0.29336,"epssPercentile":0.98138,"kev":true,"kevDateAdded":"2022-04-13","kevDueDate":"2022-05-04","kevRansomware":true,"exploited":true,"ingestedAt":"2026-08-13T06:00:54.844Z","slug":"CVE-2018-20753","body":"## Overview\n\nKaseya 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.\n\n## Affected\n\n- `virtual_system_administrator >= 9.3, < 9.3.0.35`\n- `virtual_system_administrator >= 9.4, < 9.4.0.36`\n- `virtual_system_administrator >= 9.5, < 9.5.0.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `virtual_system_administrator 9.5.0.5`","depth":"hadal","depthScore":90,"depthScoreParts":{"impact":53.9,"likelihood":5.9,"exploitation":25,"ransomware":5},"changes":[]}