How severe is CVE-2018-19944?

CVE-2018-19944 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-19944 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-19944?

CVE-2018-19944 affects Qnap Qts. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-19944?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-19944 published?

CVE-2018-19944 was published on 2020-12-31 and last updated on 2026-06-17.

CVE-2018-19944

CVE-2018-19944 is a high-severity vulnerability in Qnap Qts with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Qnap Qts
Published: 2020-12-31
Last modified: 2026-06-17

Description

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)

Frequently asked questions

What is 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)
How severe is CVE-2018-19944?: CVE-2018-19944 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-19944 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-19944?: CVE-2018-19944 affects Qnap Qts. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-19944?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-19944 published?: CVE-2018-19944 was published on 2020-12-31 and last updated on 2026-06-17.

References

https://www.qnap.com/zh-tw/security-advisory/qsa-20-22

Affected products (1)

cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*

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