CVE-2023-51364: QTS, QuTS hero, QuTScloud

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 39.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-04-26 · updated 2026-06-17
Weakness: CWE-22

Description

A path traversal vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to read the contents of unexpected files and expose sensitive data via a network. We have already fixed the vulnerability in the following versions: QTS 5.1.4.2596 build 20231128 and later QTS 4.5.4.2627 build 20231225 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTS hero h4.5.4.2626 build 20231225 and later QuTScloud c5.1.5.2651 and later

Affected products

QNAP QTS: from 4.5.1 before 4.5.4.2627; from 5.1.0 before 5.1.4.2596; 4.5.4.2627, 5.1.4.2596 — fixed in 4.5.4.2627, 5.1.4.2596
QNAP Systems Inc. QuTS hero: from h4.5.0 before h4.5.4.2626; from h5.1.0 before h5.1.3.2578; h4.5.4.2626, h5.1.3.2578 — fixed in h4.5.4.2626, h5.1.3.2578
QNAP Systems Inc. QuTScloud: from c5.0.0.1919 before c5.1.5.2651 — fixed in c5.1.5.2651

How to fix

Upgrade to a fixed version: QNAP QTS 4.5.4.2627, 5.1.4.2596; QNAP Systems Inc. QuTS hero h4.5.4.2626, h5.1.3.2578; QNAP Systems Inc. QuTScloud c5.1.5.2651. Check the vendor advisory for mitigations.

References

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