What is CVE-2018-19944?

CVE-2018-19944 is a high-severity vulnerability in QNAP Qts, classified under Missing Encryption of Sensitive Data. CVSS score: 7.5/10. Published 2020-12-31.

How severe is CVE-2018-19944?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in QNAP Qts

CVE-2018-19944

A cleartext transmission of sensitive information vulnerability has been reported to affect certain QTS devices. If exploited, this vulnerability allows a remote attacker to gain access to sensitive information. QNAP have already fixed this vulnerability in the following versions: QTS 4.4.3.1354 build 20200702 (and later)

Published 2020-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

QNAP Qts
QNAP Systems Inc. Qts — versions unspecified

Weakness classification (CWE)

References

www.qnap.com/zh-tw/security-advisory/qsa-20-22 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-19944?: CVE-2018-19944 is a high-severity vulnerability in QNAP Qts, classified under Missing Encryption of Sensitive Data. CVSS score: 7.5/10. Published 2020-12-31.
How severe is CVE-2018-19944?: High severity. CVSS v3 base score is 7.5 out of 10.