CVE-2018-11138
Quest KACE System Management Appliance Remote Command Execution Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 25 Mar 2022
- Used in ransomware campaigns
- A public exploit reference is listed
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.
Key facts
- Published
- 31 May 2018
- Last changed
- 13 Aug 2026
- Assigned by
- mitre
- KEV added
- 25 Mar 2022
- KEV fix due
- 15 Apr 2022
- Used in ransomware
- Yes, according to CISA
- EPSS
- 91.639% likely to be exploited in the next 30 days, higher than 99.818% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 31 May 2018 Published
- 25 Mar 2022 CVE-2018-11138 added to CISA KEV
- 25 Mar 2022 Added to the CISA KEV catalogue
Weakness
Practice this bug class
HackZoneLabs has a hands-on lab on OS command injection (CWE-78).