CVE-2023-34973: QTS, QuTS hero

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-24 · updated 2026-06-17
Weakness: CWE-331

Description

An insufficient entropy vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows remote users to predict secret via unspecified vectors. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QuTS hero h5.1.0.2424 build 20230609 and later

Affected products

QNAP QTS: from 5.0.1 before 5.0.1.2425; from 5.1.0 before 5.1.0.2444 — fixed in 5.0.1.2425, 5.1.0.2444
QNAP Systems Inc. QuTS hero: from h5.1.0 before h5.1.0.2424 — fixed in h5.1.0.2424

How to fix

Upgrade to a fixed version: QNAP QTS 5.0.1.2425, 5.1.0.2444; QNAP Systems Inc. QuTS hero h5.1.0.2424. Check the vendor advisory for mitigations.

References

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