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CVE-2018-11138

Quest KACE System Management Appliance Remote Command Execution

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 91.7%
  1. Published31 May 2018
  2. Added to CISA KEV25 Mar 2022
  3. Remediation due15 Apr 2022
Actively exploited (CISA KEV)

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.

Added to KEV: 25 Mar 2022Federal remediation due: 15 Apr 2022Used in ransomware

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Quest Kace System Management Appliance8.0.318

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2018-11138 being actively exploited?

Yes. CVE-2018-11138 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 25 Mar 2022. It has been used in ransomware campaigns.

How severe is CVE-2018-11138?

CVE-2018-11138 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 91.7% probability of exploitation.

Which products are affected by CVE-2018-11138?

Affected products include Quest Kace System Management Appliance.

How do I fix CVE-2018-11138?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-11138 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.