CVE-2024-21905: QTS, QuTS hero, QuTScloud

Severity: high (CVSS 8.2 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: 2024-04-26 · updated 2026-06-17
Weakness: CWE-190

Description

An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network. We have already fixed the vulnerability in the following versions: QTS 5.1.3.2578 build 20231110 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTScloud c5.1.5.2651 and later

Affected products

QNAP QTS: from 5.0.0 before 5.1.3.2578; 5.1.3.2578 — fixed in 5.1.3.2578
QNAP Systems Inc. QuTS hero: from h5.0.0 before h5.1.3.2578; h5.1.3.2578 — fixed in 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 5.1.3.2578; QNAP Systems Inc. QuTS hero h5.1.3.2578; QNAP Systems Inc. QuTScloud c5.1.5.2651. Check the vendor advisory for mitigations.

References

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