Quest KACE System Management Appliance Remote Command Execution Vulnerability
The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance is accessible by anonymous users and can be abused to perform remote code execution.
A remote attacker, without authentication, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. CISA has confirmed use of this vulnerability in known ransomware campaigns — treat as high priority for remediation. Federal agencies are required to remediate by 2022-04-15 under CISA BOD 22-01.
This is a OS Command Injection (CWE-78) vulnerability in Quest KACE System Management Appliance. 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. Exploitation requires remote network access, low attack complexity, no authentication required, and no user interaction required.
📧
Phishing link
🖼
Malicious file
🔓
Server compromised
Probably yes if any of these apply:
Used in known ransomware campaigns. Threat-research write-up: https://www.coresecurity.com/advisories/quest-kace-system-management-appliance-multiple-vulnerabilities
Manual remediation steps
Apply the Vendor Patch
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog — apply the vendor's security update as soon as possible.
CISA required action: Apply updates per vendor instructions.
References
No tested PowerShell script for this entry yet. We’re prioritising automation based on user demand.
References