What is CVE-2018-5405?

CVE-2018-5405 is a medium-severity vulnerability in Quest Kace Systems Management Appliance, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-06-03.

How severe is CVE-2018-5405?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Quest Kace Systems Management Appliance

CVE-2018-5405

The Quest Kace K1000 Appliance, versions prior to 9.0.270, allows an authenticated least privileged user with 'User Console Only' rights to potentially inject arbitrary JavaScript code on the tickets page. Script execution could allow a malicious user of the system to steal session cookies of other users including Administrator and take over their session. This can further be exploited to launch other attacks. The software also does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other user. An authenticated user with 'user console only' rights may inject arbitrary JavaScript, which could result in an attacker taking over a session of others, including an Administrator.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-06-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.036 (89.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.036 · change: -0.001

Affected products

Quest Kace Systems Management Appliance
Quest Kace Systems Management Appliance Firmware
Quest Kace K1000 Appliance — versions 9.0.270

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.kb.cert.org/vuls/id/877837/ (US Government Resource, Third Party Advisory, third-party-advisory)
support.quest.com/kb/288310/cert-coordination-center-report-update (Vendor Advisory)
packetstormsecurity.com/files/153150/Dell-KACE-System-Management-Appliance-SMA-… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-5405?: CVE-2018-5405 is a medium-severity vulnerability in Quest Kace Systems Management Appliance, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-06-03.
How severe is CVE-2018-5405?: Medium severity. CVSS v3 base score is 5.4 out of 10.