CVE-2018-11138
Critical 9.8 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- Quest KACE System Management Appliance Remote Command Execution Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible by anonymous users and can be abused to execute arbitrary commands on the system.
Metrics
- CVSS 3.1
-
9.8 (CRITICAL)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 92% (percentile: 100) as of 1 November 2026
- CWE
- CWE-78
Affected products
quest: kace system management appliance
References
- https://www.coresecurity.com/advisories/quest-kace-system-management-appliance-… ExploitTechnical DescriptionThird Party Advisory
- https://www.exploit-db.com/exploits/44950/ ExploitThird Party AdvisoryVDB Entry
- https://www.coresecurity.com/advisories/quest-kace-system-management-appliance-… ExploitTechnical DescriptionThird Party Advisory
- https://www.exploit-db.com/exploits/44950/ ExploitThird Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018… US Government Resource