What is CVE-2020-36196?

CVE-2020-36196 is a medium-severity vulnerability in QNAP Qulog Center, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2021-07-01.

How severe is CVE-2020-36196?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in QNAP Qulog Center

CVE-2020-36196

A stored XSS vulnerability has been reported to affect QNAP NAS running QuLog Center. If exploited, this vulnerability allows attackers to inject malicious code. This issue affects: QNAP Systems Inc. QuLog Center versions prior to 1.2.0.

Published 2021-07-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

QNAP Qulog Center
QNAP Systems Inc. Qulog Center — versions unspecified

Weakness classification (CWE)

References

www.qnap.com/zh-tw/security-advisory/qsa-21-30 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-36196?: CVE-2020-36196 is a medium-severity vulnerability in QNAP Qulog Center, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.1/10. Published 2021-07-01.
How severe is CVE-2020-36196?: Medium severity. CVSS v3 base score is 6.1 out of 10.