CVE-2023-32970: QTS, QuTS hero, QuTScloud

Severity: medium (CVSS 4.9 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: 2023-10-13 · updated 2026-06-17
Weakness: CWE-476

Description

A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to launch a denial-of-service (DoS) attack via a network. QES is not affected. We have already fixed the vulnerability in the following versions: QuTS hero h5.0.1.2515 build 20230907 and later QuTS hero h5.1.0.2453 build 20230708 and later QuTS hero h4.5.4.2476 build 20230728 and later QuTScloud c5.1.0.2498 and later QTS 5.1.0.2444 build 20230629 and later QTS 4.5.4.2467 build 20230718 and later

Affected products

QNAP QTS: from 4.5.1 before 4.5.4.2467; from 5.0.0.1716 before 5.0.1.2425; from 5.1.0 before 5.1.0.2444 — fixed in 4.5.4.2467, 5.0.1.2425, 5.1.0.2444
QNAP Systems Inc. QuTS hero: from h4.5.0 before h4.5.4.2476; from h5.0.0 before h5.0.1.2515; from h5.1.0 before h5.1.0.2424 — fixed in h4.5.4.2476, h5.0.1.2515, h5.1.0.2424
QNAP Systems Inc. QuTScloud: from c5.0.0.1919 before c5.1.0.2498 — fixed in c5.1.0.2498

How to fix

Upgrade to a fixed version: QNAP QTS 4.5.4.2467, 5.0.1.2425, 5.1.0.2444; QNAP Systems Inc. QuTS hero h4.5.4.2476, h5.0.1.2515, h5.1.0.2424; QNAP Systems Inc. QuTScloud c5.1.0.2498. Check the vendor advisory for mitigations.

References

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