CVE-2018-19944: Cleartext Transmission of Sensitive Information in SNMP

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-31 · updated 2026-06-17
Weakness: CWE-311

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)

Affected products

QNAP QTS: before 4.4.3.1354 — fixed in 4.4.3.1354

How to fix

Upgrade to a fixed version: QNAP QTS 4.4.3.1354. Check the vendor advisory for mitigations.

References

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

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