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CVE-2018-11138

99
FAUCET Score

CVE-2018-11138 is a critical command injection vulnerability affecting Quest KACE System Management Appliance version 8.0.318, specifically within the /common/download_agent_installer.php script. This flaw allows unauthenticated attackers to execute arbitrary commands on the system with maximum impact on confidentiality, integrity, and availability, as reflected by its CVSS score of 9.8. The vulnerability is actively exploited, including in known ransomware campaigns, and has readily available exploit modules in Metasploit and Nuclei templates, indicating a high risk of compromise. Community discussion around this CVE is extensive, further highlighting its significance.

Impacted Technologies

VendorProductVersion(s)CPE
8.0.318CPE matchmatch criteria
cpe:2.3:a:quest:kace_system_management_appliance:8.0.318:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
91.93%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 25, 2022
Metasploit: Quest KACE Systems Management Command Injection · May 31, 2018
Nuclei: CVE-2018-11138 · Oct 13, 2025
ExploitDB: EDB-44950 · Jun 27, 2018
This CVE's current EPSS score of 0.9193 is in the 99th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
coresecurity.com / advisories/quest-kace-system-management-appliance-multiple-vulnerabilities
ExploitTechnical DescriptionThird Party Advisory
exploit-db.com / exploits/44950
ExploitThird Party AdvisoryVDB Entry