Is CVE-2018-11138 in the CISA KEV catalog?

Yes. CVE-2018-11138 is on the CISA Known Exploited Vulnerabilities list, added 2022-03-25, and has known ransomware campaign use.

What is the CVSS severity of CVE-2018-11138?

CVE-2018-11138 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-11138?

CVE-2018-11138 has an EPSS score of 91.93% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2018-11138

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

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.

CWE-78OS Command Injection

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

91.93%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

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.

Apply updates per vendor instructions.

Remediation due: 2022-04-15

Associated with ransomware campaigns

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-05.