What is CVE-2018-12311?

CVE-2018-12311 is a medium-severity vulnerability in Asustor As602t, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-12-04.

How severe is CVE-2018-12311?

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

XSS in Asustor As602t

CVE-2018-12311

Cross-site scripting vulnerability in File Explorer in ASUSTOR ADM version 3.1.1 allows attackers to execute arbitrary JavaScript when a file is moved via a malicious filename.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-12-04 · 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: 0.005 (43.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Asustor As602t
Asustor Data Master — versions 3.1.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

blog.securityevaluators.com/over-a-dozen-vulnerabilities-discovered-in-asustor-… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-12311?: CVE-2018-12311 is a medium-severity vulnerability in Asustor As602t, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-12-04.
How severe is CVE-2018-12311?: Medium severity. CVSS v3 base score is 5.4 out of 10.