VulnerabilityAnalyzed
CVE-2018-20753
Kaseya VSA Remote Code Execution Vulnerability
KEVCRITICAL 9.8EPSS 29.3%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 29.34% probability · 98th percentile
- CISA KEV
- Listed 13 April 2022 · due 4 May 2022 · used in ransomware campaigns
- Affected
- kaseya/virtual system administrator
- Source
- cve@mitre.org
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2018-20753
References
- https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88Exploit, Third Party Advisory
- https://helpdesk.kaseya.com/hc/en-gb/articles/360000333152Vendor Advisory
- https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88Exploit, Third Party Advisory
- https://helpdesk.kaseya.com/hc/en-gb/articles/360000333152Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20753US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.