CVE-2023-23371: QVPN Device Client

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-06 · updated 2026-06-17
Weakness: CWE-311

Description

A cleartext transmission of sensitive information vulnerability has been reported to affect QVPN Device Client. If exploited, the vulnerability could allow local authenticated administrators to read sensitive data via unspecified vectors. We have already fixed the vulnerability in the following version: QVPN Windows 2.2.0.0823 and later

Affected products

QNAP Systems Inc. QVPN Windows: from 2.2.0 before 2.2.0.0823 — fixed in 2.2.0.0823

How to fix

Upgrade to a fixed version: QNAP Systems Inc. QVPN Windows 2.2.0.0823. Check the vendor advisory for mitigations.

References

https://www.qnap.com/en/security-advisory/qsa-23-39
https://www.qnap.com/en/security-advisory/qsa-23-39

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