CVEs / CVE-2018-20753
CVE-2018-20753: Kaseya VSA Remote Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 13 Apr 2022
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 29.5% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Kaseya VSA RMM allows unprivileged remote attackers to execute PowerShell payloads on all managed devices.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 13 Apr 2022 |
|---|---|
| Due date for US federal agencies | 4 May 2022 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|
References
- CVE-2018-20753 on NVD
- CVE-2018-20753 in the CISA KEV catalog
- https://blog.huntresslabs.com/deep-dive-kaseya-vsa-mining-payload-c0ac839a0e88 Exploit, Third Party Advisory
- https://helpdesk.kaseya.com/hc/en-gb/articles/360000333152 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20753 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.