QTS, QuTScloud

published 2024-02-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37188

cvss: 5.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits: 0; none known

An incorrect authorization vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated users to bypass intended access restrictions via a network. QTS 5.x, QuTS hero are not affected.

We have already fixed the vulnerability in the following versions: QuTScloud c5.1.5.2651 and later QTS 4.5.4.2627 build 20231225 and later

Patch / fix

fixed in 2

QNAP Systems Inc. QuTScloud c5.1.5.2651
QNAP Systems Inc. QTS 4.5.4.2627 build 20231225, 5.1.x

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-06-26)

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.0	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

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

Classification

Weakness

CWE-863 Incorrect Authorization
CWE-285 Improper Authorization

References

qnap.com /en/security-advisory/qsa-24-01
vendor-advisory

Sources

CVE List CVE-2023-32967
NVD CVE-2023-32967

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