QTS, QuTS hero, QuTScloud

published 2023-10-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37191

cvss: 4.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

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

Patch / fix

fixed in 3

QNAP Systems Inc. QuTS hero h4.5.4.2476 build 20230728, h5.0.1.2515 build 20230907, h5.1.0.2453 build 20230708
QNAP Systems Inc. QuTScloud c5.1.0.2498
QNAP Systems Inc. QTS 4.5.4.2467 build 20230718, 5.1.0.2444 build 20230629

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-16)

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	4.9	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected products

QNAP Systems Inc. QuTS hero
QNAP Systems Inc. QuTScloud
QNAP Systems Inc. QTS

Classification

Weakness

CWE-476 NULL Pointer Dereference

References

qnap.com /en/security-advisory/qsa-23-41
vendor-advisory

Sources

CVE List CVE-2023-32970
NVD CVE-2023-32970

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary