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[ CVE-2018-20753 · Published 5 Feb 2019 ]

Kaseya VSA Remote Code Execution Vulnerability

Exploited · CISA KEV CVSS 9.8 EPSS 30%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-04-13
  • Known to be used in ransomware campaigns
  • EPSS: 30% chance of exploitation in the next 30 days (higher than 98% of CVEs)
  • Critical severity: CVSS 9.8

[ Description ]Official 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.

CISA: Kaseya VSA RMM allows unprivileged remote attackers to execute PowerShell payloads on all managed devices.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 4 May 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References