Critical (9.8) in Kaseya Virtual System/Server Administrator (VSA). In CISA KEV since 2022-04-13, with known ransomware use. EPSS 30% chance of exploitation in the next 30 days.
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.
Severity
CVSS 3.1
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
30% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CISA KEV
listed 2022-04-13, due 2022-05-04, known ransomware use