CVE-2018-19941

What it is

A vulnerability has been reported to affect QNAP NAS. If exploited, this vulnerability allows an attacker to access sensitive information stored in cleartext inside cookies via certain widely-available tools. QNAP have already fixed this vulnerability in the following versions: QTS 4.5.1.1456 build 20201015 (and later) QuTS hero h4.5.1.1472 build 20201031 (and later) QuTScloud c4.5.2.1379 build 20200730 (and later)

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

0.7% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-12-31 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:50 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.7% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-12-31 17:15 UTC

Last modified

2026-06-17 01:50 UTC

Exploit probability

0.7% · EPSS, next 30 days

Weakness

CWE-315

Record status

Modified

Affected

• Qnap Qts < 4.5.1.1456
• Qnap Quts Hero < h4.5.1.1472
• Qnap Qutscloud < c4.5.2.1379

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2018-19941.md and follow it. Check whether this project is affected by CVE-2018-19941. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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