CVE-2022-27600: QTS, QuTS hero, QuTScloud

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-19 · updated 2026-06-17
Weakness: CWE-400

Description

An uncontrolled resource consumption vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following versions: QTS 5.0.1.2277 and later QTS 4.5.4.2280 build 20230112 and later QuTS hero h5.0.1.2277 build 20230112 and later QuTS hero h4.5.4.2374 build 20230417 and later QuTScloud c5.0.1.2374 and later

Affected products

QNAP QTS: from 4.5.1 before 4.5.4.2280; from 5.0.0 before 5.0.1.2277; 4.5.4.2280, 5.0.1.2277 — fixed in 4.5.4.2280, 5.0.1.2277
QNAP Systems Inc. QuTS hero: from h4.5.1 before h4.5.4.2374; from h5.0 before h5.0.1.2277; h4.5.4.2374, h5.0.1.2277 — fixed in h4.5.4.2374, h5.0.1.2277
QNAP Systems Inc. QuTScloud: from c5.0.1 before c5.0.1.2374 — fixed in c5.0.1.2374

How to fix

Upgrade to a fixed version: QNAP QTS 4.5.4.2280, 5.0.1.2277; QNAP Systems Inc. QuTS hero h4.5.4.2374, h5.0.1.2277; QNAP Systems Inc. QuTScloud c5.0.1.2374. Check the vendor advisory for mitigations.

References

https://www.qnap.com/en/security-advisory/qsa-23-09

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