QTS, QuTS hero, QuTScloud

published 2024-02-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-45794

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to execute code via a network.

We have already fixed the vulnerability in the following versions: QTS 5.1.2.2533 build 20230926 and later QuTS hero h5.1.2.2534 build 20230927 and later QuTScloud c5.1.5.2651 and later

Patch / fix

fixed in 3

QNAP Systems Inc. QTS 5.1.2.2533 build 20230926
QNAP Systems Inc. QuTS hero h5.1.2.2534 build 20230927
QNAP Systems Inc. QuTScloud c5.1.5.2651

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-02-05)

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

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

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input
CWE-121 Stack-based Buffer Overflow

References

qnap.com /en/security-advisory/qsa-23-38
vendor-advisory

Sources

CVE List CVE-2023-41278
NVD CVE-2023-41278

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